fix #1752 - add inline waffle js in site js
Make meta link tag ending consistent
removed stray end tag ul
Ensure persona JS file is cached
Merge pull request #1859 from icaaq/remove_stray_en_ul_tag

removed stray end tag ul
Merge pull request #1855 from jezdez/cleanup-sphinxsearch

Removed old occurences of the Sphinx search server.
Merge pull request #1830 from groovecoder/inline-waffle-js-1752

fix #1752 - add inline waffle js in site js
Merge pull request #1858 from darkwing/meta-link-tags

Make meta link tag ending consistent
Ensure signin is normal font-weight, not bold
Merge pull request #1866 from darkwing/sign-in-bold

Ensure signin is normal font-weight, not bold
Merge pull request #1862 from darkwing/persona-load

Ensure persona JS file is cached
Use Memcache and clean up caching setup.

- remove django-cache-machine

- removed secondary cache alias again

- use Django's cached_property decorator instead of own

- updated constance's cache setting to last format

- django-memcached-hashring for consistent hashing (based on python-memcached)

Fixes #1780.