This task was "temporarily" removed in commit 7b6619528. Since that was
done three and a half years ago, right after the dashboard was
introduced, I think it's time to make this "temporary" measure a bit
more permanent ;).
Execute rake task every day to detect new actions available for not archived proposals. If there are new actions available for today, send email to proposal's author with information text, new actions available and link to proposal dashboard url.
