Force euclidian stylebar to update on attach

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36291 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
fix for open/close StyleBarMenus

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36293 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#4393 context menu is disabled

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36295 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
5.0.3.0

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36296 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e