Engine

• add actor/setObjectRotation
• add actor/setMaterialColor
• add actor/TriggerTwoWaySwitch
• add actor/Compare
• fix bug where changing attrib type in actor/setObjectAttribute would generate an recursive stack error
• add self trigger buttons to several actor nodes
• sop/text improvements: add justify mode, add line height, add possibility to split in objects per line, add lineIndex attribute