Make fake s3 callbacks receive same num of args as s3 callbacks.

This allows both APIs to be used in async.waterfall() calls.
Make openbadger health check test webhook.

Fixes #525.
Should fix broken travis... No idea how they worked in the first place.
Remove "claim badges" per issue #460
Active dropdown menu inherits background(w) and color(b)
Add body classes
title element back to h2 (oops)
header images in place, span added to h2, challenges title moved to variable
mobile reverts to no background image in title h2
comma added to landing text, ampersand replace with "and"
period added to footer > share stories [tw cta]
Forgotten password added to login form
Merge pull request #601 from mgballard/master

Style issues post 1.0
Basic badge sharing and privacy control
Add where clause to shareToken.find()s
Fix minor issues:
  share toggle endpoint is post instead of get now
  removed unused model relationship
  basic (like... really basic) LESS styles
Fix incorrect LESS -> CSS compilation of previous commit