URBNG-298 - [WP] Create database structure for tasks + refactoring Quiz => ScoreAttack
URBNG-298 - [WP] Create database structure for tasks
+ small changes
+ version's type changed from double to int
+ fixed problem with TaskSolution entity
URBNG-135 - [WP] Provide list of tasks in mock-up gameWebService
URBNG-298 - [WP] Create database structure for tasks, URBNG-135 - [WP] Provide list of tasks in mock-up gameWebService
Merge remote-tracking branch 'remotes/blstream/windows_phone' into windows_phone

Conflicts:
	UrbanGameWP7/Common/Common.csproj
	UrbanGameWP7/UrbanGameTests/Tests/GameDetailsViewModelTest.cs
	UrbanGameWP7/UrbanGameTests/Tests/GamesListViewModelTest.cs
	UrbanGameWP7/WebService/WebService.csproj
- fixed WebApiTest
- improved GetTasks and GetTaskDetails in GameWebServiceMock
+ fixed interface implementation of relations between entities (also in mock-up)
+ small changes in tests
+ temporary disabled GamesListViewModelTest
+ added folders in Common project
uncommented test
Merge pull request #20 from Maxikq/windows_phone

URBNG-298 - [WP] Create database structure for tasks, URBNG-300 - [WP] Provide list of tasks in mock-up gameWebService