Drawing Lines added to canvas
MigLayout, ZoomLayout
Merge branch 'miglayout' into behavior
moved behavior trees to engine
Behavior Tree Editor now uses NUI
Behavior Trees are now an asset type
added support for removing
Merge branch 'miglayout' into behavior
added some @API
replaced x,y by vecmath classes
replaced x,y by vecmath classes
Merge branch 'miglayout' into behavior
improved drawing of lines
Merge branch 'draw_lines' into behavior
Added editor to main menu
fixed zoomlayout
Merge branch 'miglayout' into behavior
Added editor to main menu
Merge remote-tracking branch 'upstream/nui' into miglayout_nui
removed miglayout
Merge branch 'miglayout_nui' into behavior

Conflicts:
	engine/src/main/java/org/terasology/asset/AssetType.java
	engine/src/main/java/org/terasology/engine/modes/StateMainMenu.java
	engine/src/main/java/org/terasology/rendering/nui/mainMenu/MainMenuScreen.java
New UIScreen for behavior editor