Merge pull request #58 from Maxikq/windows_phone

URBNG-148 - [WP] Send choices for verification
[WP] URBNG-294 Implement ViewModel
[WP] URBNG-296 Implement list of active and inactive tasks
[WP] URBNG-297 Implement list of accomplished and cancelled tasks
[WP] URBNG-302 Create game details panorama page
+ Some text to AppResources
+ DateTimeConverter
+ PositionedHighScores
Merge pull request #69 from PrzemekSzyszka/windows_phone

[WP] URBNG-135 Tasks list
URBNG-381 - [WP] Unexpected problem when trying to join another (i.e. more than one) game
URBNG-376 - [WP] NullReferenceException when a logged in user selects a game from the list