[bug 991556] Group members are not sorted alphabetically

[fix bug 948530] Link to larger versions of profile pictures.

[fix bug 1001342] On UserProfile delete, delete also the related User object.

Enable timezone support.

[fix bug 848565] Make email address a unique field.

Fix deprecation warnings.

* DeprecationWarning: django.conf.urls.defaults is deprecated; use django.conf.urls instead

[fix bug 1001425] Make login button float on the right side.

[fix bug 1001339] Fields date_joined and date_last_login are not required.

[bug 997080] Add cache headers for generated CSS/JS files.

[fix bug 918115] Trigger t-shirt informational tooltips on hover.

put the right location for stage

put the right location for stage

[fix bug 1003138] Use timezone aware objects on Announcement.published.

[Bug 918115] fix tooltip JS to be mobile friendly

Fixes #1005221: T-shirt tooltip does not display on iOS
transition removed from visibility css property. made tooltip thinner to fit on iOS.
all transitions are faster.
prevent default touch event

Update basket only when functional area memberships change.

[fix bug 908053] Fix group member counts in admin.

Add GroupManager that provides member_count.

* Also add total_member_count, full_member_count and
  pending_member_count in Admin Panel.

Beautify GroupAdmin.

[fix bug 980887] Speedup group browsing.

[fix bug 1000938] Proper filtering for group memberships.

Tests cleanup.

[fix bug 980138] Display total number of results found for a search

[fix bug 1003875] Add Discouse to external accounts.

Add django-import-export and dependencies.

Add django-import-export support to admin panel.