Add database model implementations.
Add unit tests for database models.
Add missing include guards.
Add make_unique helper function.
Implementation of initial database query.
Add object container class.
Add pointer-qvariant conversion methods.
Connection between ObjectManager and UI during initialization.
Use QStringLiteral and QLatin1String.
Change database scheme.
Working app initialization.
Add debug and release configuration.
Additional initialization of database relations.
Merge branch 'dbmodels' into develop