update, basic items, inventory, gui slots and stats for them

UScript:
- added some basic support for items,
- inventory for taking care of items, 6slots planned to be something
like it is in warcraft3 for champions, even the game is turning in its
direction
- basic stats for items, being added upon putting them in inventory

Flash:
- i saw theres no finished implementation of draggable slots in CLIK
components for AS3, so added my own with DragManager working in similar
way as CLIK one,
- based on Events (DragEvents)
- interface working with the DragManager allowing UI components that
implement it having drag&drop functionality