Merge branch 'release/0.8.6' into dev
Fix stats and add a bit of caching
caching, add memcached to requirements.txt
uncache questions, fix later
Revert "Latest question is now the default tab"

This reverts commit 9879821a2c55a8364c480e2452de4cb3e3285f1c.
hotfix caching not to break flatblock messages, fixing #272
add joint to parterns, fixing #270
#245 do not display tags of deleted questions

When a question gets deleted, its tags should not be displayed in the
locality page on the left side.
#232 disable buttons when question is deleted

We don't want users to upvote/flag/delete/edit questions when they are
deleted, so the controls are now disabled in a deleted question page.
However, the models still support all the actions if the user is feeling
smart and hacks the request, but it's not such a big deal.
rewrite polyorg to meet our needs, create basic form and list views, fix #268
add me to admins
add link to candiate list management to toolbar for editors
bump version
Merge branch 'release/0.8.7'

Add basic candidate list management.