FIX: Metamorph error due to malformed HTML
FIX: confusing UI when clicking Delete All Posts button
FIX: PostDestroyer needs to update user stats. Delete All Posts button was broken, making it impossible to delete users.
UX: Squash activity columns together. Show a cold map on the difference
between the last post and original post dates. Fix some missing classes
in the mobile templates and topic map.
FEATURE: export user list
clean up exports weekly
Merge pull request #2656 from akshaymohite/optimization-fixes

Avoid using to_s when performing String Interpolation
Merge pull request #2655 from techAPJ/patch-3

FEATURE: export user list
FIX: add referer to version_check request
we don't need this "or" separator on login page