Island: Include refresh token into responses

[cakekoa]

What does this PR do?

Fixes part of #3137.

Login and registration should respond with a token pair

PR Checklist

• Have you added an explanation of what your changes do and why you'd like to include them?
• Is the TravisCI build passing?
• Was the CHANGELOG.md updated to reflect the changes?
• Was the documentation framework updated to reflect the changes?
• Have you checked that you haven't introduced any duplicate code?

Testing Checklist

• Added relevant unit tests?
• Do all unit tests pass?
• Do all end-to-end tests pass?
• Any other testing performed?

  Tested by validating the output of cURL commands to the endpoints

• If applicable, add screenshots or log transcripts of the feature working

  $ curl -X POST -H 'Accept: application/json' -H 'Content-Type: application/json' --data '{"username": "test", "password": "testtest"}' -k ${ISLAND}/api/register
  {"meta": {"code": 200}, "response": {"user": {"authentication_token": "WyJmOGMxZTc0YzBkNWM0MjQzYWI4NTE0NDY3MGYzNzRhYiJd.ZCW59Q.RHLJsim5y-SvYb8Nppe1qy_p0UY", "refresh_token": "ImY4YzFlNzRjMGQ1YzQyNDNhYjg1MTQ0NjcwZjM3NGFiIg.ZCW59Q.GaWzjz9XpCu50VItcHp8OYhgk6o"}, "csrf_token": "IjFhMzJmNDdlMzEyYmM1NDNjM2EwOGJlYzBmYWY2ZjI2OGFiZmE2MmIi.ZCW59Q.aPp670PyIpbjDa21IggSRVC1Zic"}}
  

  $ curl -X POST -H 'Accept: application/json' -H 'Content-Type: application/json' --data '{"username": "test", "password": "testtest"}' -k ${ISLAND}/api/login
  {"meta": {"code": 200}, "response": {"user": {"authentication_token": "WyJmOGMxZTc0YzBkNWM0MjQzYWI4NTE0NDY3MGYzNzRhYiJd.ZCW6oQ.rDpRYYkGKD5ZqP0mcr3Ht1mdR3U", "refresh_token": "ImY4YzFlNzRjMGQ1YzQyNDNhYjg1MTQ0NjcwZjM3NGFiIg.ZCW6oQ.Fzt20Y92SD1cp7HTcMJrau7zP6Q"}, "csrf_token": "ImRmODNmN2E4Mzg1MTY4MjA5YTgxMGVhYzRiNzNhYmE1NzUwYTZiMjgi.ZCW6oQ.naYnUG37y7TmpBA-LrmCduFDB04"}}
  

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +0.02 🎉

Comparison is base (d50b781) 72.48% compared to head (08e396a) 72.50%.

❗ Current head 08e396a differs from pull request most recent head 7b68728. Consider uploading reports for the commit 7b68728 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3180      +/-   ##
===========================================
+ Coverage    72.48%   72.50%   +0.02%     
===========================================
  Files          467      467              
  Lines        13285    13295      +10     
===========================================
+ Hits          9630     9640      +10     
  Misses        3655     3655              

see 5 files with indirect coverage changes

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[mssalvatore]

Travis fails
Missing unit tests

[mssalvatore]

Suggested change

	Adds a refresh token to the response
	Returns a copy of the response object with a refresh token added to it.

[ilija-lazoroski]

Again Travis fails.