Add omniauth-facebook gem
Add pry-rails gem
Add omniauth.rb
Add create users migration
Add user model
Add FacebookAuthenticator
Add SessionsController
Add login/logout related routes
Add login related helpers
Use released version of bootstrap

Bootstrap changes very often.
Add navbar
adds model for searching programs
implements search form
adds an index for sorting programs
Merge branch 'feature/search-program' into develop
default_scope without block is deprecated
changes the playback gaps
adds a shortcut to fucus on the search field
adds margin to the search field
Fix Program#movie_uri