doc: remove old forum links
This removes about all links to the old forum. It leaves old links in place where they are used to link to specific posts. Small changes like removing identica and some rss feeds are included as well.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This removes about all links to the old forum. It leaves old links in place where they are used to link to specific posts. Small changes like removing identica and some rss feeds are included as well.