Added checks for the size of the interior, cut-out triangle to make sure
everything is drawn correctly at small sizes; buttons are now also
hidden if they overflow from the tool.

Mostly, removal of old code that had been commented out instead of
removed

Now coping creates a full copy of already created item. Copy has it's own content (like video, audio or folder) and stores original item properties (like locked, pos, size, freezed e.t.c.).

When it rotates with the tool bracket gestures to change its size are not consistent. The parameters of size change does not take into account the position of the bracket.
SANKORE-598
Changing the size of the bracket using the angles opposite the right angle does not work all the time, we must rotate the bracket so you can change its size