Fix owlCarousel initialisation on homepage
re-arrange, update, and simplify vagrant doc
Merge pull request #2551 from iakshay/homepage-carousel-fix

Fix owlCarousel initialisation on homepage
Add notifier to Revision Dashboard
Fixed formatting in rst file.
Merge pull request #2554 from iakshay/revisions-notifier

Add notifier to Revision Dashboard
Reduce the number of queries for attachment files.

Currently we’re doing 2 queries for each file, while we can easily
fetch the current revision in one query. MySQL will likewise be able to
cache that.
Merge pull request #2557 from mozilla/file-query-count

Reduce the number of queries for attachment files.
Merge pull request #2556 from groovecoder/vagrant-docs-cleanup

re-arrange, update, and simplify vagrant doc