Ticket #3485: as a further preparation, remove references to GuiManager from GeoGebraFrame (to prepare for simple web applets)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27636 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
handle only visible marble clicks

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27637 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #3485: further preparations

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27638 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e