correct import order

pwa-backend/src/main/java/io/growingabit/app/controllers/MeController.java

@@ -1,6 +1,20 @@
 package io.growingabit.app.controllers;
 
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.Context;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+
+import org.apache.commons.lang3.StringUtils;
+
 import com.googlecode.objectify.NotFoundException;
+
 import io.growingabit.app.exceptions.SignupStageExecutionException;
 import io.growingabit.app.model.BitcoinAddress;
 import io.growingabit.app.model.InvitationCodeSignupStage;
@@ -16,17 +30,6 @@
 import io.growingabit.backoffice.dao.InvitationDao;
 import io.growingabit.backoffice.model.Invitation;
 import io.growingabit.jersey.annotations.Secured;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-import javax.ws.rs.Consumes;
-import javax.ws.rs.GET;
-import javax.ws.rs.POST;
-import javax.ws.rs.Path;
-import javax.ws.rs.Produces;
-import javax.ws.rs.core.Context;
-import javax.ws.rs.core.MediaType;
-import javax.ws.rs.core.Response;
-import org.apache.commons.lang3.StringUtils;
 
 @Secured
 @Path("api/v1/me")

pwa-backend/src/main/java/io/growingabit/app/controllers/VerificationEmailController.java

@@ -1,21 +1,24 @@
 package io.growingabit.app.controllers;
 
-import io.growingabit.app.dao.StudentEmailSignupStageDao;
-import io.growingabit.app.model.StudentEmailSignupStage;
-import io.growingabit.app.model.User;
-import io.growingabit.jersey.annotations.Secured;
 import java.io.UnsupportedEncodingException;
+
 import javax.servlet.http.HttpServletResponse;
 import javax.ws.rs.GET;
 import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 import javax.ws.rs.core.Context;
 import javax.ws.rs.core.Response;
+
 import org.apache.commons.codec.binary.Base64;
 import org.joda.time.DateTime;
 import org.slf4j.ext.XLogger;
 import org.slf4j.ext.XLoggerFactory;
 
+import io.growingabit.app.dao.StudentEmailSignupStageDao;
+import io.growingabit.app.model.StudentEmailSignupStage;
+import io.growingabit.app.model.User;
+import io.growingabit.jersey.annotations.Secured;
+
 @Path("api/v1/verify/email/{verificationCode}")
 public class VerificationEmailController {
 

pwa-backend/src/main/java/io/growingabit/app/controllers/VerificationPhoneController.java

@@ -1,23 +1,26 @@
 package io.growingabit.app.controllers;
 
-import com.googlecode.objectify.Key;
-import io.growingabit.app.dao.StudentPhoneSignupStageDao;
-import io.growingabit.app.dao.UserDao;
-import io.growingabit.app.model.StudentPhoneSignupStage;
-import io.growingabit.app.model.User;
-import io.growingabit.app.utils.auth.Auth0UserProfile;
-import io.growingabit.jersey.annotations.Secured;
 import javax.servlet.http.HttpServletResponse;
 import javax.ws.rs.GET;
 import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 import javax.ws.rs.core.Context;
 import javax.ws.rs.core.Response;
 import javax.ws.rs.core.SecurityContext;
+
 import org.joda.time.DateTime;
 import org.slf4j.ext.XLogger;
 import org.slf4j.ext.XLoggerFactory;
 
+import com.googlecode.objectify.Key;
+
+import io.growingabit.app.dao.StudentPhoneSignupStageDao;
+import io.growingabit.app.dao.UserDao;
+import io.growingabit.app.model.StudentPhoneSignupStage;
+import io.growingabit.app.model.User;
+import io.growingabit.app.utils.auth.Auth0UserProfile;
+import io.growingabit.jersey.annotations.Secured;
+
 @Secured
 @Path("api/v1/verify/phone/{verificationCode}")
 public class VerificationPhoneController {

pwa-backend/src/main/java/io/growingabit/app/dao/UserDao.java

@@ -3,6 +3,7 @@
 import com.google.common.base.Preconditions;
 import com.googlecode.objectify.Key;
 import com.googlecode.objectify.ObjectifyService;
+
 import io.growingabit.app.model.User;
 import io.growingabit.common.dao.BaseDao;
 

pwa-backend/src/main/java/io/growingabit/app/model/BitcoinAddress.java

@@ -1,8 +1,9 @@
 package io.growingabit.app.model;
 
-import com.google.common.base.Preconditions;
 import org.apache.commons.lang3.StringUtils;
 
+import com.google.common.base.Preconditions;
+
 public class BitcoinAddress {
 
   private String address;

pwa-backend/src/main/java/io/growingabit/app/model/InvitationCodeSignupStage.java

@@ -2,6 +2,7 @@
 
 import com.googlecode.objectify.annotation.Cache;
 import com.googlecode.objectify.annotation.Entity;
+
 import io.growingabit.app.exceptions.SignupStageExecutionException;
 import io.growingabit.app.model.base.ReferenceSignupStage;
 import io.growingabit.app.signup.executors.SignupStageExecutor;

pwa-backend/src/main/java/io/growingabit/app/model/StudentConfirmationEmail.java

@@ -1,11 +1,13 @@
 package io.growingabit.app.model;
 
-import com.google.common.base.Preconditions;
-import io.growingabit.app.utils.SecureStringGenerator;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.validator.routines.EmailValidator;
 import org.joda.time.DateTime;
 
+import com.google.common.base.Preconditions;
+
+import io.growingabit.app.utils.SecureStringGenerator;
+
 public class StudentConfirmationEmail {
 
   private static final int VERIFICATION_CODE_LENGTH = 30;

pwa-backend/src/main/java/io/growingabit/app/model/StudentConfirmationPhone.java

@@ -1,10 +1,12 @@
 package io.growingabit.app.model;
 
-import com.google.common.base.Preconditions;
-import io.growingabit.app.utils.SecureStringGenerator;
 import org.apache.commons.lang3.StringUtils;
 import org.joda.time.DateTime;
 
+import com.google.common.base.Preconditions;
+
+import io.growingabit.app.utils.SecureStringGenerator;
+
 public class StudentConfirmationPhone {
 
   private static final int VERIFICATION_CODE_LENGTH = 8;

pwa-backend/src/main/java/io/growingabit/app/model/StudentData.java

@@ -1,12 +1,13 @@
 package io.growingabit.app.model;
 
-import com.google.common.base.Preconditions;
-import com.googlecode.objectify.annotation.Ignore;
 import org.apache.commons.lang3.StringUtils;
 import org.joda.time.DateTime;
 import org.joda.time.format.DateTimeFormat;
 import org.joda.time.format.DateTimeFormatter;
 
+import com.google.common.base.Preconditions;
+import com.googlecode.objectify.annotation.Ignore;
+
 public class StudentData {
 
   @Ignore

pwa-backend/src/main/java/io/growingabit/app/model/StudentDataSignupStage.java

@@ -2,6 +2,7 @@
 
 import com.googlecode.objectify.annotation.Cache;
 import com.googlecode.objectify.annotation.Entity;
+
 import io.growingabit.app.exceptions.SignupStageExecutionException;
 import io.growingabit.app.model.base.SignupStage;
 import io.growingabit.app.signup.executors.SignupStageExecutor;

pwa-backend/src/main/java/io/growingabit/app/model/StudentEmailSignupStage.java

@@ -2,6 +2,7 @@
 
 import com.googlecode.objectify.annotation.Cache;
 import com.googlecode.objectify.annotation.Entity;
+
 import io.growingabit.app.exceptions.SignupStageExecutionException;
 import io.growingabit.app.model.base.SignupStage;
 import io.growingabit.app.signup.executors.SignupStageExecutor;

pwa-backend/src/main/java/io/growingabit/app/model/StudentPhoneSignupStage.java

@@ -2,6 +2,7 @@
 
 import com.googlecode.objectify.annotation.Cache;
 import com.googlecode.objectify.annotation.Entity;
+
 import io.growingabit.app.exceptions.SignupStageExecutionException;
 import io.growingabit.app.model.base.SignupStage;
 import io.growingabit.app.signup.executors.SignupStageExecutor;

pwa-backend/src/main/java/io/growingabit/app/model/User.java

@@ -1,18 +1,21 @@
 package io.growingabit.app.model;
 
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.apache.commons.lang3.StringUtils;
+
 import com.googlecode.objectify.Ref;
 import com.googlecode.objectify.annotation.Cache;
 import com.googlecode.objectify.annotation.Entity;
 import com.googlecode.objectify.annotation.Id;
 import com.googlecode.objectify.annotation.Load;
+
 import io.growingabit.app.model.base.SignupStage;
 import io.growingabit.app.utils.Settings;
 import io.growingabit.common.model.BaseModel;
 import io.gsonfire.annotations.ExposeMethodResult;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.Map;
-import org.apache.commons.lang3.StringUtils;
 
 @Entity
 @Cache

pwa-backend/src/main/java/io/growingabit/app/model/WalletSetupSignupStage.java

@@ -3,6 +3,7 @@
 import com.google.common.base.Preconditions;
 import com.googlecode.objectify.annotation.Cache;
 import com.googlecode.objectify.annotation.Entity;
+
 import io.growingabit.app.exceptions.SignupStageExecutionException;
 import io.growingabit.app.model.base.SignupStage;
 import io.growingabit.app.signup.executors.SignupStageExecutor;

pwa-backend/src/main/java/io/growingabit/app/model/base/SignupStage.java

@@ -1,17 +1,19 @@
 package io.growingabit.app.model.base;
 
+import org.apache.commons.lang3.StringUtils;
+
 import com.googlecode.objectify.Key;
 import com.googlecode.objectify.annotation.Id;
 import com.googlecode.objectify.annotation.Ignore;
 import com.googlecode.objectify.annotation.Parent;
+
 import io.growingabit.app.exceptions.SignupStageExecutionException;
 import io.growingabit.app.model.User;
 import io.growingabit.app.signup.executors.SignupStageExecutor;
 import io.growingabit.app.utils.Settings;
 import io.growingabit.common.model.BaseModel;
 import io.growingabit.objectify.annotations.Required;
 import io.gsonfire.annotations.ExposeMethodResult;
-import org.apache.commons.lang3.StringUtils;
 
 public abstract class SignupStage<T> extends BaseModel {
 

pwa-backend/src/main/java/io/growingabit/app/signup/executors/InvitationCodeSignupStageExecutor.java

@@ -4,6 +4,7 @@
 import com.googlecode.objectify.Key;
 import com.googlecode.objectify.ObjectifyService;
 import com.googlecode.objectify.VoidWork;
+
 import io.growingabit.app.dao.InvitationCodeSignupStageDao;
 import io.growingabit.app.exceptions.SignupStageExecutionException;
 import io.growingabit.app.model.InvitationCodeSignupStage;

pwa-backend/src/main/java/io/growingabit/app/signup/executors/SignupStageExecutor.java

@@ -3,6 +3,7 @@
 import com.google.appengine.api.taskqueue.QueueFactory;
 import com.google.appengine.api.taskqueue.TaskOptions;
 import com.google.common.base.Preconditions;
+
 import io.growingabit.app.dao.StudentDataSignupStageDao;
 import io.growingabit.app.dao.StudentEmailSignupStageDao;
 import io.growingabit.app.dao.StudentPhoneSignupStageDao;

pwa-backend/src/main/java/io/growingabit/app/tasks/deferred/DeferredTaskSendVerificationEmail.java

@@ -1,11 +1,13 @@
 package io.growingabit.app.tasks.deferred;
 
+import org.slf4j.ext.XLogger;
+import org.slf4j.ext.XLoggerFactory;
+
 import com.google.appengine.api.taskqueue.DeferredTask;
+
 import io.growingabit.app.dao.StudentEmailSignupStageDao;
 import io.growingabit.app.model.StudentEmailSignupStage;
 import io.growingabit.mail.MailService;
-import org.slf4j.ext.XLogger;
-import org.slf4j.ext.XLoggerFactory;
 
 public class DeferredTaskSendVerificationEmail implements DeferredTask {
 

pwa-backend/src/main/java/io/growingabit/app/tasks/deferred/DeferredTaskSendVerificationSMS.java

@@ -1,18 +1,20 @@
 package io.growingabit.app.tasks.deferred;
 
+import org.apache.commons.configuration2.Configuration;
+import org.apache.commons.lang3.StringUtils;
+import org.slf4j.ext.XLogger;
+import org.slf4j.ext.XLoggerFactory;
+
 import com.google.appengine.api.taskqueue.DeferredTask;
 import com.googlecode.objectify.NotFoundException;
 import com.twilio.Twilio;
 import com.twilio.rest.api.v2010.account.Message;
 import com.twilio.type.PhoneNumber;
+
 import io.growingabit.app.dao.StudentPhoneSignupStageDao;
 import io.growingabit.app.model.StudentConfirmationPhone;
 import io.growingabit.app.model.StudentPhoneSignupStage;
 import io.growingabit.app.utils.Settings;
-import org.apache.commons.configuration2.Configuration;
-import org.apache.commons.lang3.StringUtils;
-import org.slf4j.ext.XLogger;
-import org.slf4j.ext.XLoggerFactory;
 
 public class DeferredTaskSendVerificationSMS implements DeferredTask {
 

pwa-backend/src/main/java/io/growingabit/app/utils/BitcoinAddressValidator.java

@@ -3,6 +3,7 @@
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.util.Arrays;
+
 import org.apache.commons.lang3.StringUtils;
 
 public class BitcoinAddressValidator {

pwa-backend/src/main/java/io/growingabit/app/utils/GoogleUrlShortenerService.java

@@ -1,16 +1,18 @@
 package io.growingabit.app.utils;
 
+import java.io.IOException;
+import java.util.Arrays;
+
+import org.apache.commons.lang3.StringUtils;
+import org.slf4j.ext.XLogger;
+import org.slf4j.ext.XLoggerFactory;
+
 import com.google.api.client.googleapis.extensions.appengine.auth.oauth2.AppIdentityCredential;
 import com.google.api.client.http.javanet.NetHttpTransport;
 import com.google.api.client.json.jackson2.JacksonFactory;
 import com.google.api.services.urlshortener.Urlshortener;
 import com.google.api.services.urlshortener.UrlshortenerScopes;
 import com.google.common.base.Preconditions;
-import java.io.IOException;
-import java.util.Arrays;
-import org.apache.commons.lang3.StringUtils;
-import org.slf4j.ext.XLogger;
-import org.slf4j.ext.XLoggerFactory;
 
 public class GoogleUrlShortenerService extends Urlshortener {
 

pwa-backend/src/main/java/io/growingabit/app/utils/SecureStringGenerator.java

@@ -1,9 +1,10 @@
 package io.growingabit.app.utils;
 
-import com.google.common.base.Preconditions;
 import java.security.SecureRandom;
 import java.util.Random;
 
+import com.google.common.base.Preconditions;
+
 public class SecureStringGenerator {
 
   // only use unreserved url characters

pwa-backend/src/main/java/io/growingabit/app/utils/Settings.java

@@ -1,9 +1,10 @@
 package io.growingabit.app.utils;
 
-import com.google.common.base.Preconditions;
 import java.net.URL;
 import java.nio.charset.StandardCharsets;
+
 import javax.xml.ws.WebServiceException;
+
 import org.apache.commons.configuration2.CombinedConfiguration;
 import org.apache.commons.configuration2.Configuration;
 import org.apache.commons.configuration2.FileBasedConfiguration;
@@ -14,6 +15,8 @@
 import org.apache.commons.configuration2.ex.ConfigurationException;
 import org.apache.commons.configuration2.tree.OverrideCombiner;
 
+import com.google.common.base.Preconditions;
+
 public class Settings {
 
   public static final String DEFAULT_PROPERTIES_NAME = "default.properties";

pwa-backend/src/main/java/io/growingabit/app/utils/auth/Authorizer.java

@@ -2,6 +2,7 @@
 
 import java.security.Principal;
 import java.util.Set;
+
 import javax.ws.rs.core.SecurityContext;
 
 public class Authorizer implements SecurityContext {
@@ -37,4 +38,4 @@ public boolean isSecure() {
   public String getAuthenticationScheme() {
     return SecurityContext.FORM_AUTH;
   }
-}
+}

pwa-backend/src/main/java/io/growingabit/app/utils/gson/GsonFactory.java

@@ -2,6 +2,7 @@
 
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
+
 import io.gsonfire.GsonFireBuilder;
 
 public class GsonFactory {