Name size increased on the main layout.
Improved screen handling.

The application does not keep the screen always on. It will turn on the screen automatically when the user must be notified.
Increased timer size.
Added 'Back' button support for landing page and start new session page.
Phone "Camera" button works now as a "Next Player" button, when the screen is turned on.
Multilanguage support added, texts exported to XML.