2349: remove ------ from team language options

There's no need to include it -- Chosen handles the "empty selection" option.
2341: force moderated edits to go through the tasks panel

If we don't do this we can get strange things happening with review/approve
tasks.
Merge branch 'staging' into i-2341
Merge branch 'i-2341' into staging
Merge branch 'i-2349' into staging