Added database connector for speller
Added bunch of methods
Connected saving and loading handlers to database
refs #498
Added db files to gitignore
refs #498
Added general database manager
Created general db connector
Sorted methods of the connector
Added app specific params to manager module
Database agent for speller with just interface functions
Improved file loading handler in speller widgets
refs #498
Db agent return path to the just added text file
refs #498
Specified row factory for speller db
refs #498
Added class for speller pop up
Connected pop up with json handler and speller database
refs #498
Merge branch 'ratio-layout' into speller-db

Conflicts:
	pisak/speller/widgets.py
Speller file loading pop up works
Changed dims in json
Deleted property adapter inheriting by pop up class
refs #498
Open pop up only when there are any files
refs #498
Clear pop up before closing
Specified property type of background scene
refs #498
Improved speller pop up scanning issues
refs #498
Add record to db only when any text to save
Changed variable name to more self-explanatory
refs #498
Improved speller pop up
Added properties to pop up class and changed the way of generating content
Returned to using property adapter in layout module for the sake of inheriting issues
Added ratio dimensioning to layouts
Modified save/load handlers
Added props to speller pop up in json and modified structure
Added ratio dimensioning to background pattern
refs #532 #531 #530
Merge branch 'master' into speller-db

Conflicts:
	pisak/speller/handlers.py
	pisak/speller/widgets.py
Pop up handling save and load functions
Modified names in jsons
Modified pop up class
refs #530 #531 #532
Changed the way of setting pop up mode
refs #531 #532
Merge branch 'master' into speller-db

Conflicts:
	pisak/speller/widgets.py
Added mouse selector to pop up scanning group
Changed size of the stage
refs #530
Changed scanning selectors in json
refs #530
Fixed scanning in pop up window
Changed selector for mouse
refs #530