Bump superagent from 3.5.2 to 3.7.0 in /webapp

Bumps [superagent](https://github.com/visionmedia/superagent) from 3.5.2 to 3.7.0.
- [Release notes](https://github.com/visionmedia/superagent/releases)
- [Changelog](https://github.com/visionmedia/superagent/blob/master/HISTORY.md)
- [Commits](https://github.com/visionmedia/superagent/commits/v3.7.0)

Deduplicate yarn.lock

webapp/package.json

@@ -3,9 +3,10 @@
   "version": "1.0.0",
   "description": "Expose Mattermost notifications via postMessage API",
   "dependencies": {
+    "deduplicate": "^1.0.0",
     "mattermost-redux": "1.0.1",
     "prop-types": "15.5.10",
-    "superagent": "3.5.2"
+    "superagent": "3.7.0"
   },
   "devDependencies": {
     "babel-core": "6.25.0",

webapp/yarn.lock

@@ -1250,9 +1250,10 @@ color-name@^1.1.1:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
 
-combined-stream@^1.0.5, combined-stream@~1.0.5:
-  version "1.0.5"
-  resolved "https://registry.yarnpkg.com/combined-stream/-/combined-stream-1.0.5.tgz#938370a57b4a51dea2c77c15d5c5fdf895164009"
+combined-stream@^1.0.5, combined-stream@^1.0.6, combined-stream@~1.0.5:
+  version "1.0.8"
+  resolved "https://registry.yarnpkg.com/combined-stream/-/combined-stream-1.0.8.tgz#c3d45a8b34fd730631a110a8a2520682b31d5a7f"
+  integrity sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==
   dependencies:
     delayed-stream "~1.0.0"
 
@@ -1298,9 +1299,9 @@ convert-source-map@^1.1.0, convert-source-map@^1.5.0:
   version "1.5.1"
   resolved "https://registry.yarnpkg.com/convert-source-map/-/convert-source-map-1.5.1.tgz#b8278097b9bc229365de5c62cf5fcaed8b5599e5"
 
-cookiejar@^2.0.6:
-  version "2.1.1"
-  resolved "https://registry.yarnpkg.com/cookiejar/-/cookiejar-2.1.1.tgz#41ad57b1b555951ec171412a81942b1e8200d34a"
+cookiejar@^2.1.0:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/cookiejar/-/cookiejar-2.1.2.tgz#dd8a235530752f988f9a0844f3fc589e3111125c"
 
 copy-concurrently@^1.0.0:
   version "1.0.5"
@@ -1400,16 +1401,21 @@ debug@^2.1.1, debug@^2.2.0, debug@^2.6.8:
   dependencies:
     ms "2.0.0"
 
-debug@^3.0.1:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
+debug@^3.0.1, debug@^3.1.0:
+  version "3.2.6"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-3.2.6.tgz#e83d17de16d8a7efb7717edbe5fb10135eee629b"
   dependencies:
-    ms "2.0.0"
+    ms "^2.1.1"
 
 decamelize@^1.0.0, decamelize@^1.1.1:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
 
+deduplicate@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/deduplicate/-/deduplicate-1.0.0.tgz#6a791900c552d794061ce08c47150245b8ad0295"
+  integrity sha1-ankZAMVS15QGHOCMRxUCRbitApU=
+
 [email protected]:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/deep-equal/-/deep-equal-1.0.1.tgz#f5d260292b660e084eff4cdbc9f08ad3247448b5"
@@ -1541,13 +1547,7 @@ enhanced-resolve@^3.0.0:
     object-assign "^4.0.1"
     tapable "^0.2.7"
 
-errno@^0.1.3:
-  version "0.1.4"
-  resolved "https://registry.yarnpkg.com/errno/-/errno-0.1.4.tgz#b896e23a9e5e8ba33871fc996abd3635fc9a1c7d"
-  dependencies:
-    prr "~0.0.0"
-
-errno@^0.1.4:
+errno@^0.1.3, errno@^0.1.4:
   version "0.1.6"
   resolved "https://registry.yarnpkg.com/errno/-/errno-0.1.6.tgz#c386ce8a6283f14fc09563b71560908c9bf53026"
   dependencies:
@@ -1761,14 +1761,10 @@ extglob@^0.3.1:
   dependencies:
     is-extglob "^1.0.0"
 
-[email protected]:
+[email protected], extsprintf@^1.2.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/extsprintf/-/extsprintf-1.3.0.tgz#96918440e3041a7a414f8c52e3c574eb3c3e1e05"
 
-extsprintf@^1.2.0:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/extsprintf/-/extsprintf-1.4.0.tgz#e2689f8f356fad62cca65a3a91c5df5f9551692f"
-
 fast-deep-equal@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-1.0.0.tgz#96256a3bc975595eb36d82e9929d060d893439ff"
@@ -1876,7 +1872,7 @@ forever-agent@~0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/forever-agent/-/forever-agent-0.6.1.tgz#fbc71f0c41adeb37f96c577ad1ed42d8fdacca91"
 
-[email protected], form-data@^2.1.1:
+[email protected], form-data@^2.3.1:
   version "2.3.1"
   resolved "https://registry.yarnpkg.com/form-data/-/form-data-2.3.1.tgz#6fb94fbd71885306d73d15cc497fe4cc4ecd44bf"
   dependencies:
@@ -2614,7 +2610,7 @@ mime-types@^2.1.12, mime-types@~2.1.7:
   dependencies:
     mime-db "~1.30.0"
 
-mime@^1.3.4:
+mime@^1.4.1:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
 
@@ -2676,6 +2672,10 @@ [email protected]:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
 
+ms@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.1.tgz#30a5864eb3ebb0a66f2ebe6d727af06a09d86e0a"
+
 [email protected]:
   version "0.0.5"
   resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.5.tgz#8fbfabb0a98a253d3184331f9e8deb7372fac6c0"
@@ -3011,10 +3011,6 @@ [email protected]:
     fbjs "^0.8.9"
     loose-envify "^1.3.1"
 
-prr@~0.0.0:
-  version "0.0.0"
-  resolved "https://registry.yarnpkg.com/prr/-/prr-0.0.0.tgz#1a84b85908325501411853d0081ee3fa86e2926a"
-
 prr@~1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/prr/-/prr-1.0.1.tgz#d3fc114ba06995a45ec6893f484ceb1d78f5f476"
@@ -3063,9 +3059,9 @@ punycode@^1.2.4, punycode@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
 
-qs@^6.1.0:
-  version "6.5.1"
-  resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.1.tgz#349cdf6eef89ec45c12d7d5eb3fc0c870343a6d8"
+qs@^6.5.1:
+  version "6.7.0"
+  resolved "https://registry.yarnpkg.com/qs/-/qs-6.7.0.tgz#41dc1a015e3d581f1621776be31afb2876a9b1bc"
 
 qs@~6.4.0:
   version "6.4.0"
@@ -3172,22 +3168,14 @@ [email protected]:
   dependencies:
     redux-persist "^4.5.0"
 
-[email protected]:
+[email protected], redux-persist@^4.5.0:
   version "4.9.1"
   resolved "https://registry.yarnpkg.com/redux-persist/-/redux-persist-4.9.1.tgz#271fa31d1c782ebf9082fb5174e829db24faf59e"
   dependencies:
     json-stringify-safe "^5.0.1"
     lodash "^4.17.4"
     lodash-es "^4.17.4"
 
-redux-persist@^4.5.0:
-  version "4.10.2"
-  resolved "https://registry.yarnpkg.com/redux-persist/-/redux-persist-4.10.2.tgz#8efdb16cfe882c521a78a6d0bfdfef2437f49f96"
-  dependencies:
-    json-stringify-safe "^5.0.1"
-    lodash "^4.17.4"
-    lodash-es "^4.17.4"
-
 [email protected]:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/redux-thunk/-/redux-thunk-2.2.0.tgz#e615a16e16b47a19a515766133d1e3e99b7852e5"
@@ -3572,19 +3560,19 @@ strip-json-comments@~2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
 
-superagent@3.5.2:
-  version "3.5.2"
-  resolved "https://registry.yarnpkg.com/superagent/-/superagent-3.5.2.tgz#3361a3971567504c351063abeaae0faa23dbf3f8"
+superagent@3.7.0:
+  version "3.7.0"
+  resolved "https://registry.yarnpkg.com/superagent/-/superagent-3.7.0.tgz#bd58bfde2cbc5305adb9ccbb6dacba18408629d6"
   dependencies:
     component-emitter "^1.2.0"
-    cookiejar "^2.0.6"
-    debug "^2.2.0"
+    cookiejar "^2.1.0"
+    debug "^3.1.0"
     extend "^3.0.0"
-    form-data "^2.1.1"
+    form-data "^2.3.1"
     formidable "^1.1.1"
     methods "^1.1.1"
-    mime "^1.3.4"
-    qs "^6.1.0"
+    mime "^1.4.1"
+    qs "^6.5.1"
     readable-stream "^2.0.5"
 
 supports-color@^2.0.0: