SYM, BB10: Moved QML files to symbian subfolder.

In preparation of Harmattan port that will require a separate set of QML
files for UI.
N9: Added Harmattan packaging rules.
N9: Added Harmattan UI.

Closes #4 - Nokia N9 port.
Small refactoring:

- Removed unneeded/unused parameters from signals.
- Renamed few signals for naming consistency.
- Removed debugging output.
Re-run translation if source or target language was changed.