adding lines under filters.new

adding filters.new.lower_title_with_count and lower_title
FIX: Edit ratelimits should be on the actor, not post owner
FIX: Only unhide flagged post if editor is the author

Also, rename @user to @editor in PostRevisor
Allow changing ownwership of posts by admins
Pass sprockets context and environment to Sass::Engine.
BUGFIX: add default value to top_topics' scores
update annotations
BUGFIX: make sure site settings are refreshed after a restore
BUGFIX: N+1 query when listing users in admin section
BUGFIX: uses markdown instead of HTML when inserting hyperlinked images
Ditch params when showing link domains
FIX: Problem crawling amazon titles
Version bump to v0.9.9.1
Change comma-delim site settings to pipe-delim
Add UI for list site settings
Merge pull request #2203 from riking/change-owner

Change post owner functionality
Merge pull request #2207 from riking/list-setting

UI for list site settings
allow polls to be closed independently of topic
BUGFIX: bust for anon
Merge pull request #2240 from bmamlin/closed-poll

allow polls to be closed independently of topic