Unit tests and fixes for roundtrips in other cultures

Fixes issues #131, #132 and #128
Fixed compile error for PCL
Disable warnings as errors for Mono. Issue #133
Updated mono docs and fixed some minor formatting issues
Removed repeated warning
Added unit test for a basic repository pattern
Created separate solution for iOS
Added store tests and ConfigurationProvider
Added ConfigurationProvider for Android
Fixed newtonsoft.json reference
Updated and restructured docs
Created unit test for issue #134
Fix for issue #134

Also simplified the SPARQL query processing path a bit.
Fixed unit tests after running on real device
Merge branch 'feature/ios' into develop
SDK targetting changed by Xamarin VS Plugin
Initial upgrade to 0.23.2

One module unit test is now failing
Workaround in unit test for possible Nancy bug
Merge branch 'feature/nancy23_upgrade' into develop
Upgraded MVVMLight libs for Polaris