#3922 Fix for web (Checks needed)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30703 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#3857: fix for touch end events

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30705 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e