- fix updating problem for FormPage.set_live_revision method: perform update_item_index with the data from the new revision - make code more clear that we are fetching by revision
- define FormPage.set_live_revision, a specialized version of CrItem.set_live_revision updating the item index. - prefer usage of FormPage.set_live_revision over "::xo::db::sql::content_item set_live_revision" in xowiki