#3631: Fixed font resizing for sign in menu

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29230 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#3631 general url handling (for easy deployment)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29231 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e