Dutch translations
Init polish translation
Cleanup of code.
* Fix phpdocs,
* Fix interfaces that blocked extending,
* Reuse new ResourceBundle interfaces,
* Fix fatal errors.
use strict in js
Merge pull request #6 from tvlooy/dutch_translations

Dutch translations
Merge pull request #7 from Antek88/master

Init polish translation
Merge pull request #4 from stloyd/feature/interfaces

Cleanup of code.