***Error handling Complete***

[CalebAmes]

No error handling for passwords that don't match when signing up. Prevents any other errors from showing

========== Original ===========
User Story
As a Developer, I want to validate the LogIn/Signup forms being submitted so my users have a good experience when using my application.
Acceptance Criteria

• (Log In) If the username/password combination is wrong, or the user does not exist the login fails.
• (Log In) A message is displayed to the end user indicating which fields are invalid.
• (Sign Up) If the username/email already exists, the signup form fails
• (Sign Up) A message is displayed to the end user indicating which fields are invalid.