Updated a whole lot.

Yes, it is destroying the upgrade path to ding2tal.
However, so have a whole lot of other changes also done.
So I expect the only way will be to make a new site based on ding2tal and then migrate the content.
Remove the hidden panes from the panel.
Standard features exclude of the old deprecated features 1.x field exports.
new image style for events lists.
Merge branch 'oc_export' into merge