Object Properties: Menu, set correct size of object properties

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@33489 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Making the layout size computation a bit less wrong on file loading

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@33490 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e