Scale web applets too

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34780 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
NPE fix for http://www.geogebra.org/forum/viewtopic.php?f=52&t=36235 (Relation.ggb)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34781 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e