[oa_discussion] Update panes and displays to use uuids.
Merge remote-tracking branch 'origin/update-panes-displays-with-uuids' into 7.x-2.x
Merge remote-tracking branch 'origin/og_permission-discussion-reply' into 7.x-2.x
Merge branch '7.x-2.x' of github.com:scottalan/oa_discussion into 7.x-2.x