db->comments->bulk_get method
store events in db in the new format
012-event-v2 upgrade: skip already upgraded events
document Event object structure in API.md
backup-production.pl: hardcode questhub.io; mini synopsis
pull-db.pl: rewrite pull-db-from-production.sh in perl
pull-db.pl pulls from backup by default
Merge branch 'news-feed-stage-2'

http://questhub.io/meta/quest/511e62a369071bab68000018