larger font-size for the menu on tablets

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35662 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
bigger font-size in AlgbraView for tablets

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35663 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e