Finishing ErrorHandler
Request + some modification in ErrorHandler + Api
Adding Response, Controller and DB master class (drafts). Coding initializacftion in API
Adding View manager + testing controller + testing view
Modification in Api, Request (singleton), Response (singleton), Controller
Next step.
DBClass changed to singleton
adding sqlite proxy class
adding model master class

some modification in response and other stuff
Basic actions (DataController)

Modification in DBInterface -> deleting fetchData() method
Db -> modification to query methods

Added Osoba model
Create sql-s
Modification in controller.
Adding transaction to db class
Finishing Controller.
Need to add some validation