Added symboler json to res
Added icons for automatic pages flipping
refs #805
Added icons for display buttons usable in json
refs #805
Added widgets module with button bar and tile source stab
refs #789 #790
Added launching app module for symboler
refs #792
Defined style properties for symboler
Moved tlo pola tekstowego to css folder
refs #806
Removed some hollow things from json
Added some imports in launcher and widgets
refs #805
Added dims according to the project
Changed mx stack to mx frame
Added ratios to menu header
refs #805
Added symbols many-to-many database model
Added interface functions for inserting, getting and linking symbols and categories
Used sqlalchemy
Created module database manager for this purpose
refs #795
Merge branch 'master' into symboler

Conflicts:
	pisak/launcher.py
Rewritten method to find context
Got rid of accessing clutter objects in prediction
refs #796
Added slider widget
Added slider to json
Added symboler specific slider
Added css placeholders for slider
refs #790 #805 #806
add symbols for symboler to res/symbols, ones that Przemek uses
refs #780
Added is_disabled method to Scannable interface
Changed subgroup generator to nonempty-only
refs #803
Added collapsing of singular groups
refs #804
Symbol text nullable
Added nullable preview path column to category
refs #795
Get symbols and cats through omr for consistency
refs #795
Added symbols data loader
refs #808
Non default arg before default arg in db manager
refs #795
Merge branch 'symbols-sqlalch' into symboler-integration
Merge branch 'symboler' into symboler-integration