mobile: fix clipping


git-svn-id: https://geuz.org/svn/gmsh/trunk@17988 59c8cabf-10d6-4a28-b43f-3936b85956c4
iOS: short title for iPhone


git-svn-id: https://geuz.org/svn/gmsh/trunk@17989 59c8cabf-10d6-4a28-b43f-3936b85956c4