Killed old save GUI

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26712 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
NPE fix

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26713 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#3299 login, logout works with forum logins

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26714 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e