Merge branch 'dev' into Try_rspec
add application_ctrl_spec
add routing specs
add gem capybara; add homes_view_spec
add categories_view_spec
add events_view_spec (not finished)
add selenium; trubles with sign_in in tests
modify routes for i18n
tmp
translate homes#index & layouts/application
translate pictures#index &  pictures#show
translate user_comments#index
translate events#index & events#show
translate categories#
translate kaminari
add file 'devise.ru.yml'
translate & add 'ru.bootstrap.yml'
add activerecord.ru.yml & activerecord.en.yml
simple_captcha to haml
devise to haml