#3882 GUI elements creation in Web and playing with Events

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30843 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #3767: commiting this as it seems to be better than it was before (eliminating deferred call from onResize). This will make other speedups possible in ticket #3485 too. Enhancements to this may come in the future.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30844 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e