Animatron/player — pull request #102 by shamansir (2013-07-18 14:59:12+00:00)
Title: Do not show invisible elements

Now `element.visible` flag is free for user to change and means that its logic (modifiers) will run, but the object will not be drawn.

For previous meaning ( system flag, showing *if this object was actually drawn* ), there is `shown` flag exists now.

All elements that noted in projects, exported from Editor, as invisible, become disabled, though (because it actually means this, in Editor).