Merge branch 'i18978'
Merge branch 'master' of https://github.com/tdvsdv/usability

Conflicts:
	app/views/settings/_usability.html.erb
	assets/stylesheets/usability.css
	config/locales/en.yml
	config/locales/ru.yml
Refactored js code to underline tabs names to function for re-use
Fixed typo in issues helper patch
Merge commit '5d4d98653a95fae7af2e8f767c0419e6e134b176'

Conflicts:
	app/views/settings/_usability.html.erb
	assets/stylesheets/usability.css
	config/locales/ru.yml
Fixed minor style for gravatar on error page
Merge branch 'master' of https://github.com/tdvsdv/usability
fix remove ajax_emitter data
Merge branch 'development'

Conflicts:
	app/views/settings/_usability.html.erb
	assets/javascripts/usability.js
	assets/stylesheets/usability.css
Fixed remarks on issue #18937
Merge branch 'development' of https://github.com/tdvsdv/usability into development
Merge branch 'development'

Conflicts:
	app/views/errors/error_status.html.erb
#18472 Fixed bug with usability settings
Merge branch 'master' of https://github.com/tdvsdv/usability
#18472 Fixed bug with usability settings
Merge branch 'hotfix18472'
#18472 Fixed bug with usability settings
Merge branch 'hotfix18472'
#18958 fixes. Removed option of moving text fields to the bottom
Merge branch 'master' into i18958