Add lokijs
Add loky
Add database abstraction for opening and flush database in secure store
Base implementation of model
Working on model context
Model context done
Add relationships declaration
Fix methods ignoring database context
Create relationship dynamic view
Fix syntax errors
Working on delete rule
Working on relation binding
Implement relationship delete rule
Fix bugs related to database persistency
Database done
Refactor wallet class
Add qr code recognition
Add refresh method
Update QR code scanner in send dialog
Fix balance task