Merge branch 'dev' release 2.0.9
Merge branch 'dev'

* dev:
  Fix: https://monterail.airbrake.io/groups/55407266
  Require yail/json_gem
  Fix https://monterail.airbrake.io/groups/55407822
  fix: Break words in relic’s notes
  Fix typo again
  Add pg_trgm indexes
  Add better_errors gem, disable debugger
  Typo fix
  Add missing includes
  Better relic helper methods
Merge branch 'dev'

* dev:
  hotfix: Don’t break all words in relic’s notes
Secure secret token, use raven instead of airbrake
Merge branch 'dev'
Change Airbrake to Raven
Remove unused specs
Add omniauth as direct dependency on project
Update gems (patches)
Fix paper trail for photos
fix: Facebook login
fix: ActiveAdmin failed on migrations
Fix migrations
First implementation of adding images through API
Remove documentation block
fix: set proper language for html tag
fix: due to bug in routing-filter gem, header "x-path" was missing :locale parameter
fix: use regex for matching current location
Merge branch 'fix/locale' into dev
fix: set locale explicitly, otherwise selected language will always be replaced by locale retrieved from header "Accept-Language"