Adding track of courses and errors routing
Merge branch 'develop' of https://github.com/kaize/itc73 into feature/courses_track_and_pages_92_108

Conflicts:
	config/locales/ru.yml
Refactoring courses track and routes
Refactoring view and css
Add columns to table
Add google analytics and yandex-metrics
Adding right translation
Merge branch 'develop' of https://github.com/kaize/itc73 into feature/airbrake_and_fixing_routes_103_104

Conflicts:
	Gemfile
Changing name of feedbacks and counters
Adding export to timepad and refactoring factories
Adding unique ids for timepad lists
Fixing bugs
Fixing bugs
Fixing views with registrations
Fixing view of profile edit
Right allowing courses subscribing
Adding authorixzation by other social networks
Configuring omniauth
Fixing routes and callbacks
Refactoring controllers