Changelog
---------

General Change: Added foundation for controlled entities using GUI

-Added-
=Added button element which includes two types, select and toggle (still need to change select image when mouse is down)
=Added two more GUI textures
=Added collision method into CollisionUtility
=Added GUIList which now handles the adding of the GUI
=Added name variable for all elements
=Added GUIUnit that now handles GUI events for any unit that inherits from it
=Added button to kill entities

-Changed-
=Turned worker class into the GameUnit class
=Put dropdown box into GUIList instead of Selector

Signed-off-by: Wasabi_Snorter <gendevelopmentemail@gmail.com>