Add Devise inviteable views
Added polish localization and set it as default language

- [WIP] Recipe list improvements
- [WIP] Lil' love for main menu and header
Updated dependencies

Added pry-rails gem
Removed localeapp gem
Refactoring recipe partials
CSS refactoring

- Add logged-in status and locale to body classes
- Use :en as a fallback locale
Use before_filter :authenticate_user!
Load only isotope when `imagesLoaded` fires
Merge branch 'master' into staging

Conflicts:
	Gemfile.lock