Rename files

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36359 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
removed reference from "html5" to "web"

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36360 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
show SignInDialog after FileMenu - Save

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36361 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e