Make the wiki page buttons sticky
Merge pull request #2535 from groovecoder/sticky-wiki-buttons

Make the wiki page buttons sticky
clean out the search_doc_nav flag
Fix owlCarousel initialisation on homepage
Merge pull request #2547 from groovecoder/clean-doc-nav-flag

clean out the search_doc_nav flag
Merge pull request #2551 from iakshay/homepage-carousel-fix

Fix owlCarousel initialisation on homepage
Add notifier to Revision Dashboard
A few code cleaups.
Renamed SubscriptionForm to NewsletterForm as that's what the form is about.
Removed the browserid_realm view as it's not needed anymore.
Made some tests uses reverse.
Add some docstrings.
Mark newsletter format choice labels translateable.
Restore some previously accidently removed code.
Added sociallogin_provider to user session when logging in. Refs #2555.
Use reverse for the login related URL settings.
Fixed formatting in rst file.
Merge pull request #2554 from iakshay/revisions-notifier

Add notifier to Revision Dashboard
Ported Persona template over Jinja and removed allauth apps from Jingo exclusion list.
Removed a few old entries in the Jingo exclusion list.