Create "Other Languages" category for Python and GLSL

Reusable for other foreign languages

Change-Id: I264ad145601850397702d5dd656b77d495661eb8
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>
QmlDesigner: Remove unused qmldir file

This is a leftover from QtQuick 1.

Change-Id: I1540924f11fd3c316b68b7a04eb1786afc6bfec1
Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>