Mostly internal mimetypes

Change-Id: Ia84206f1334c1f83474cbc307e848719bb98adbc
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>