Added Microsoft Http Client Libraries to all projects (except contracts)
Added little TokenManager
Added a base service client  and its necessary classes
Wired token manager
Added possibility to login and showing error, if not possible
Added translation for it
After Login redirect to MainPage
Added some documentation
Added layout for MainPage and its translation
Wired translation to main page
Implemented a BasePage using a ScrollView
Created necessary classes for new ArticlesPage
Own classes for Master and Detail Page
Wiring ArticleDetailPage and ArticleMasterPAge
Added translations for upcoming article master mage
Added translation for upcoming article detail page
Master Page with fake items
Removed ArticlesPageViewModel, since we will create a Viewmodel for each sub page
New sample data, images. Slight UI tweak for login screen.
Cleanup
Fixed BaseServiceClient BaseAdress Url
Fixed BaseServiceClient not showing errors when getting 404
Added extension for ObservableCollections
Added ArticleServiceClient, careful: It does not cache currently