Refactored some mockup actions.
Merge pull request #736 from gorco/ActionsRef

Refactored some mockup actions.
Merge pull request #737 from RotaruDan/initBehaviorFix

Fixes init Behavior when saving.
Added class for component ids.
Merge pull request #739 from gorco/Exits

Added class for component ids.
Fixes Mockup crash while opening a new game.
Fixes Undo/redo functionality while editing.
Fixes drawing clamping.
Fixes LaunchExternalEditor bug when launching more than once the editor.
Clone has an offset and other small fixes.