Update for saving files locally (web)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36393 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
NPE fix

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36394 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e