Developing v0.17.0

• notebook: added tabs weight
• checkbox: fixed bug in radio group initialization
• propertygrid: disabled items now have greyed label too
• added control properties: button, checkbox, combox, listbox, menubar, panel, picture, progress, textbox, toolbar, treebox
• new items_dialog exchange format used in collectable items: collapse, combox, listbox, menubar, tabbar, toolbar (LOST COMPATIBILITY WITH PREVIOUS VERSIONS)
• removed Tokenizer lib
• updated all the guis created with nana-creator
• improved code generation
• fixed some minor bugs/code