Add recent reviews filter

Add filter to show only approved vendors with approved reviews under
"Recently Reviewed"
Change settings_private to settings_local

This naming convention is slightly more logical because
not all local settings are private, but all private settings
are local.
Merge branch 'master' of github.com:/steventlamb/django-vegancity
Fix up build tools
Merge branch 'master' of github.com:steventlamb/django-vegancity
Merge pull request #99 from cwimbrow/bug/recent-reviews-issue95

Add recent reviews filter
Make build tools work for virtual environment.

The Vagrant file and build scripts should now be able to
fire up a working app with data.
Add circular skyline photo
Make aggregate ratings smaller on vendor_detail page
Swap in circular skyline photo and wrap it in a div
adding reference to new font
Tweak HTML/CSS on review page
Add slugs to urls for better SEO.

Now supporting optional slugs in vendor URLs. By optional
I mean we should use them everywhere on our site, but that
they are not enforced.

For example:
/vendors/5/
/vendors/5-hello-world/
/vendors/5-hello-universe/

will all point to the same vendor, with id 5. I did some
research and this technique is acceptable. In fact, it is
used in some form by some large scale websites, like the
onion.
Add vendor notes to meta description for SEO