TODO:

Low-prio:
* (feature) Special page to list users blocked via "Mark as spammer".
* (feature) modaction=promote for quickly assigning "automoderated" flag.
* (feature) Support gzip compression and external storage of mod_text.
* (feature) Backup previous text when a pending change is modified.
	This would prevent situation when a user has accidentally deleted
	important text in his own pending change, and the old text wasn't
	recoverable.
	It would also make [action=editchange] safe from moderator's errors,
	and would allow to log what exactly did the moderator change.
	Note: this backup must be in a separate SQL table.
	Not having "edit history" in moderation table simplifies everything.
* (feature) Support MCR (multi-content revisions) - editing of non-main slots.
	Note: this is easier to implement after MW 1.31 becomes deprecated,
	because 1.31 didn't support MCR.
* (feature) Make it possible to Approve edits caused by Special:ChangeContentModel.
* (feature) Add "rejected edits" link for moderators in ContributionsToolLinks hook.
	It's not a simple UI change, because "moderation" SQL table currently
	doesn't have an index for selecting edits by author.
* (feature) Should ApproveHook update timestamps of upload/move logs?
* (UX) Automatically reject null edits during modaction=merge.

FIXME:
* "Move associated talk page" checkbox should work for intercepted page moves.