MBS-5744: limit edits modbot looks at to those that have any potential to actually be closed
MBS-5744: select only those edits that almost certainly will close this hour
MBS-5744: limit edits-with-votes selected to only those that have all votes of the same type
MBS-5744: >=, not > (thanks nikki!)
MBS-5744: use a REQUIRED_VOTES constant instead of a hacky comment-todo
Merge remote-tracking branch 'ian/mbs-5744-quicker-modbot' into beta

* ian/mbs-5744-quicker-modbot:
  MBS-5744: use a REQUIRED_VOTES constant instead of a hacky comment-todo
  MBS-5744: >=, not > (thanks nikki!)
  MBS-5744: limit edits-with-votes selected to only those that have all votes of the same type
  MBS-5744: select only those edits that almost certainly will close this hour
  MBS-5744: limit edits modbot looks at to those that have any potential to actually be closed