To do list - local db integration progress

Goal: new tasks inserted are saved in the database, and all previously
saved tasks are displayed.
to do list - local db progress
to do list - local db integration done

All tasks and their statuses are now saved into the local database when
the user leaves the to do list page and fetched back when resuming.
Merge branch 'todolist'

Conflicts:
	.idea/workspace.xml