Merge branch 'stable/0.1' into feature/server-interface
<feature/server-connection> Implemented Challenge Rest Store
Merge branch 'stable/0.1' into feature/server-interface
added nunit test project with simple challenge browser test
ignore test results in git
fixed method naming
added test for GetChallengesCount
added some more tests
Deserialize base challenge #27
use .net version of geo.dll instead of Portable class library #27
<feature/server-interface> Merge branch 'stable/0.1' into feature/server-interface

Conflicts:
	DralloApp/IOs/Drallo.Lib.iOS/Domain/Challenge.cs
	DralloApp/IOs/Drallo.Lib.iOS/Drallo.Lib.iOS.csproj
<stable/0.1> Merge branch 'feature/server-interface' into stable/0.1