Adds button for navigating to topmost component onscroll

Changed color of the button to white
Merge pull request #285 from gopesht/footer

Adds button to navigate to topmost component onscroll
Add instructions for secrets on Readme
Merge pull request #290 from alexvenn/readme-secrets

Add instructions for secrets on Readme
There is no common logger in model namespace
Update and fix test kitchet to be conformant with poltergeist
Add poltergeist, therubyracer, reshuffle Gemfile to be more lean
Drop Travises usage of xvfb
Drop console outputs from js
Remove AR loggin in test enviroment - speed boost hence
Cleanup current issues with schema, and regenerate latter
Travis should not install ri and rdocs
Fix view test for cfps
Add more options to the contributur to communicate
Hound is not more here
Fix migration for person to user migration
Allow to collect coverage information locally
Add coverage improval remark [ci ckip]
Fix typo in contributing.md [ci skip]
Merge pull request #289 from openSUSE/review_140704_update_rails_and_replace_webkit_with_poltergeist

[Review] Request from 'kalabiyau' @ 'openSUSE/osem/review_140704_update_rails_and_replace_webkit_with_poltergeist'