FEATURE: add topic status namespace in RSS feed
Merge pull request #3001 from techAPJ/patch-1

FEATURE: add topic status namespace in RSS feed
FIX: Admin panel referral stats not counting topics correctly

Due to what seems to be a bug in ActiveRecord, the distinct: true option
is not recognized on counts with string column names. This commit fixes
that by moving the DISTINCT into the count string.

For robustness, the integration spec for IncomingLinksReport was
rewritten to be an actual integration spec, running the actual interface
on actual fake data.
FIX: changing category shows error for TL3
FEATURE: clean up unmatched email/ip entries after a year
Merge pull request #2999 from riking/fix_top_referrers_topic_count

FIX: Topic referrals by user were wrong
upload bulk invite csv file to /public/uploads/csv
Merge pull request #3003 from techAPJ/patch-2

upload bulk invite csv file to /public/uploads/csv
ooops. forgot the args :fired:
FIX: don't show the banner topic on error page
UI for group membership editing
use guardian for permission check on patches to /groups/xxx
incremental add/remove on group membership