Theming: Remove obsolete Q_ENUMS()

It is a left-over

Change-Id: I316c5f589a801b901a3e00621ea7e37b4294c549
Reviewed-by: Alessandro Portale <alessandro.portale@digia.com>
Theming: Use QQmlPropertyHash for passing theme to QML

This makes the mapping of theme values to QML automatic.

Change-Id: I4442ef454dc3a7dde1bd6b068b03ff890db3e49f
Reviewed-by: hjk <hjk121@nokiamail.com>