We have to doble check all emails deliveries from the dashboard.
Using a setting to skip all dashboard email deliveries for now.
Note that a rake task to activated the `Setting["dashboard.emails"]` will need to be addded when we want to activate deliveries of these emails.
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.
