[Fix bug 984252] Fix events API local start/end dehydration.

* When using USE_TZ=True, tastypie converts DateTimeField to the timezone specified.
* To fix that, in local start/end dehydration we return naive datetime.
[bug 976099] Redirect to the current page after sign in.
[fix bug 1026962] Display a comment with a user's vote on a budget poll.
[bug 1026956] Extend polls with no majority decision for 24 hours.

* Send reminder email marked as urgent on voting extension.
* Migrate remaining voting cronjobs to celery.
* Remove unused daily voting reminder cron.
Merge pull request #786 from akatsoulas/1026962

[fix bug 1026962] Display a comment with a user's vote on a budget poll.
Merge pull request #798 from johngian/1026956

[bug 1026956] Extend polls with no majority decision for 24 hours.
[bug 1048132] Migrate featured_rep users to m2m table.
[bug 1048132] Delete foreign key to User from FeaturedRep table.
[fix bug 1048132] Allow multiple users as Featured Rep.
Merge pull request #797 from akatsoulas/1048132

[fix bug 1048132] Allow multiple users as Featured Rep.
[bug 1026962] Update comment msg from remobot.
Merge pull request #800 from akatsoulas/voting-comment-fix

[bug 1026962] Update comment msg from remobot.
Change ordering to FeaturedRep model.
Merge pull request #784 from johngian/984252-timezone

[Fix bug 984252] Fix events API local start/end dehydration.
Merge pull request #799 from glogiotatidis/976099

[bug 976099] Redirect to the current page after sign in.
Merge pull request #801 from akatsoulas/update-featured-order

Change ordering to FeaturedRep model.