The 'all nominator' and 'all references' emails (at least, maybe others too) send their message to all nominators for all years, instead of limiting the list of recipients to only nominators or references for nominations in the current award period.
Add some 'WHERE' cluases to the SQL for these lists to make sure they only send emails to current year people (nominators, nominees, references).
(Copied from AppStateESS/plm#1 )
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