Collecting relevant pieces in preparation of settings aspectification.
Change-Id: Ia221de3babf301f4f5d3583d346eeb9f91046aa4
Reviewed-by: Sami Shalayel <sami.shalayel@qt.io>
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
Rename qmljseditingsettingspage.* to qmljseditorsettings.*,
re-arrange some includes, use settings() for the singleton access
etc.
Change-Id: Iff36a99baf0afd238a935386e9111818be5d7987
Reviewed-by: Christian Stenger <christian.stenger@qt.io>