improve cursor position detection for long string
move few vk properties from code to JSON
fix problem with vk popup
update menu item font definition
make possible JSON configuration for menu item font and color for menu bar and menu
add package function to declare packages classes and other stuff
declare demo classes using new package method
add new row and column insertion methods in matrix model
switch to use relative to JSON image path
bug fixes
various small modifications
change JSON bag class to support env varibles and classes aliases with dedicated JSON properties
re-generated runtime code
updated doc
small modifications, fix few bugs in Tabs
small modifications
small modifications