[web] null pointer fix

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24171 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Make sure clicked is true when dragging points

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24172 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e