[fix bug 884807] Update search page message for anonymous users.
[Bug 887279] Fix overlapping group chiclets at smaller screen sizes.
Merge pull request #533 from juliaelman/887279-chiclet-overlap

[Bug 887279] Fix overlapping group chiclets at smaller screen sizes.
Merge pull request #528 from glogiotatidis/search-page-message

[fix bug 884807] Update search page message for anonymous users.
[fix bug 886968] On successful login, redirect to /register/.
[Fix Bug 885120] fix tick in search bar and logo on Chrome
[Bug 886867] Fixing mosaic display overlap on Nexus 7.
[fix bug 887342] Don't show groups for public and unvouched users.
Merge pull request #535 from Sancus/master

 [Fix Bug 885120] fix tick in search bar and logo on Chrome
Merge pull request #534 from glogiotatidis/886968

[fix bug 886968] On successful login, redirect to /register/.
Merge pull request #537 from glogiotatidis/887342

[fix bug 887342] Don't show groups for public and unvouched users.
[Bug #889330] Fix for tabzilla search box viewing in Chrome.]
[Bug 889755] Fixing incorrect display of persona button on non-homepage logged out pages + added a min-height for those pages.
Merge pull request #538 from juliaelman/889330-fix-tabzilla-search-box

[Bug #889330] Fix for tabzilla search box viewing in Chrome.
Merge pull request #539 from juliaelman/889755-fixing-persona-button

[Bug 889755] Fixing incorrect display of persona button on non-homepage ...
Merge pull request #536 from juliaelman/886867-mosaic-overflow

[Bug 886867] Fixing mosaic display overlap on Nexus 7.
bump vendor to fix django downgrade
[bug 886968] Allow /browserid/* urls through RegistrationMiddleware.
[bug 886968] Use SessionStorage for Messages.
Restore LOGIN_URL in settings.