add draft support of disabled cells
correct navigation
get rid on unnecessary redraws
start reworking navigation approach
improve navigation
fix coordinates assignment and infinite loop during navigation
clean and update docs
Merge branch 'grid' into develop
add DefinePlugin
Merge branch 'develop' into list

Conflicts:
	app/js/ui/list.js
add draft cycle and overflow events
get rid of all comments in release builds
v0.4.3