Merge pull request #14 from danharper/master

Prevent false positives on search
Add StackOverflow

It's easy if you haven't posted. Have to contact customer support if you have.
Merge pull request #15 from danharper/patch-2

Add StackOverflow
render sites on the server instead of with JS
fix html
improve hover
standardise indentation, and quotes
hide search box when no JS
when js is disabled, show the red/orange colour as a border
disable browser tooltips on hover when js is on
Merge pull request #16 from danharper/ss

Render sites server-side
Mozilla Persona
Update sites.json

Added Steam.
Update sites.json
Added Gumroad

There isn't a URL describing how to delete an account, just a mailto: to contact their support. So I've included the URL of the main website.
Update sites.json

Added Outlook.
Fix typo in Skype note
Add Glassboard
Add TripIt
Add GoodReads