Only warn about necromancy when replying
Clean up site_settings.yml

 - Hide several variables that the client does not use
 - Use concise default syntax when possible
Shuffle around the order of site settings

The goal of this is twofold:
 - Make the more commonly changed settings higher
 - Find groups for more uncategorized settings

Additionally, the SEO category was deleted, its contents folded into Security and Spam.
Merge pull request #2165 from awesomerobot/master

a few simple style clean-ups
embedded iframe css improvements
Merge pull request #2156 from riking/fix-necro

Only warn about necromancy when replying
5px not 5
add img max width to embedded iframe comments
add Other Optional Stuff section, link swap guide
omit needless words
Always use lower case URLs, fix date formatting and add full date title
Lowercase md file
Merge pull request #2076 from riking/clean-site-settings

Clean up site_settings.yml
BUGFIX: overflow hidden messes stuff up for chrome on mac
update onebox gem
FEATURE: Live update edits
FEATURE: update likes and flags live.
oops
Live update poll votes.
Merge pull request #2166 from vikhyat/poll-plugin

Live update poll votes