Merge pull request #654 from sergeyklay/feature-bootstrap-3

BS3 updates
New feature: Created SQL shema for PM
Updated translation: Amended Russian
New feature: WIP. Added Message Model
Updated feature: Added load method and consructor
Updated feature: Added some helpers
Fixed issue: Converted indentation to tabs
Fixed issue: WIP. Added intial message config.
Updated feature: Amended routing
Updated feature: Created route for messages
Updated feature: Amended Routing
Updated feature: Added loadDrafts, some refactoring
Updated feature: Added magic __get
New feature: Added initial Message Controller
New feature: Added initial views for messages
Update feature: Cerber Theme
Updated feature: Added Model_Message::delete, improved __get()
Updated feature: WIP. Added inbox and delete actions
Updated feature: Added view for inbox
Fixed issue: Renamed Send action to Compose