SynchronizationService and Event classes code cleanup
Renamed Trellendar domain to Native
Enabled migrations for DataAccess project
Generated initial migration
Introduced entites configuration structure
Configured User entity
Created migration for User entity configuration
Merge branch 'database_access'
Created Repository interface and defult implementation
Introduced RepositoryFactory and UnitOfWork
Fixed TrellendarDataContext registration
Moved Repository folder to Native folder
Merge branch 'repository_introduction'
Created DataAccess.Local project
Renamed Native domain to Trellendar
Renamed DataAccess project to DataAccess.Remote
Adjusted DataAccess.Remote project classes namespaces
Merge branch 'DataAccess_project_split'
Removed unused ApplicationKeys file
Fixed packages references