qmljs: differnt language constants for the different qml flavors

Added separated qbs, qmltypes, QtQuick1, and QtQuick2
and "generic" Qml languages.
Cleaned up the mime types a bit, preparing for registered mime
types.

Change-Id: I0e484c93e003176cd659acc546baa6d024defa19
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>