Merge pull request #53 from PrzemekSzyszka/windows_phone

UrbanGameTests fix
Merge pull request #54 from PrzemekSzyszka/windows_phone

[WP] Unit tests fix
URBNG-136[WP] GPS task details
Merge pull request #55 from psimek/windows_phone

URBNG-136[WP] GPS task details
[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