cai-util-u3d-editor: Added the EditorUtil class.
cai-util-u3d-editor: Added the EditorUtil class.

This class contains new standard GUI styles.
Moved some editor-only methods from the cai-util-u3d library to the EditorUtil class. 
stevefsp/critterai,stevefsp/critterai,stevefsp/critterai,stevefsp/critterai,stevefsp/critterai