implement iqdb wrapper
Merge branch 'iqdb'
fix specs
new version
iqdb changes
fix spec
update iqdb display helper
fix iqdb importer
iqdb fixes
iqdb fixes
iqdb: switch to SIGTERM to kill process
Fix notice for banned posts
fixes #2119
fixes #2117
#1469: Fix issue with topics getting marked as read erroneously

It looks like it would set last_forum_read_at to the oldest unread
topic's updated_at value. But then it would fail to include that same
topic in the query next time because it used > instead of >=.
Fix case where user's has_mail could be erroneously set to false
enable iqdb callbacks for post
new version
fix dmail tests
bug fixes for iqdb