- more work done on ui cleanup and docking
 * almost there, docking east/west works 95 % of cases but still a few bugs to work out
 * visual (3d) views gets correctly "pushed" aside when docking/resizing docked panels
 * had to do some very "unclean" hacks to get it to work : views (very slightly) aware of other views outside their scope (visualEditor/ code editor) so
it need a big ole' cleanup
 * MUST move to LESS: css code is getting really unmanageable