Biggest fan insight: Improve copy

Show header image and alternate text for singular fan.
Update column chart for large data sets.

Don't show hundreds of gridlines.
Allow space for larger labels.
Metapost insight copy fix: Handle 0% rounded down by hiding percentage
Add FollowDAO Methods

::getVerifiedFollowers() - List of verified followers of a user
::getVerifiedFollowerCount() - Number of verified followers

Updates interface
Adds MySQL implementation
Updates tests
New insight: Verified followers

Show a user all their verified followers once,
and then each year after if the number changes.

Closes #1989, closes #2031
Add verifiedlist.tpl for stream view.
Style stats insight: Avoid InsightFieldNotSetException when headline is not set
We can now compile our LESS and Coffeescript via Grunt and things are organized more sensibly.
Settings page looks a lot better, but still needs a couple tweaks.
User settings page is cleaned up.
The Facebook settings page is now working.
The Twitter settings page is also working.