Missed commits from the recommender skeleton pull request.
gold partners: Updates and additions

Add Bart's Bakery, iFixit, Outgrow.me, redditgifts, and Uber
Various copy/logo updates
reddit_base: Make appengine regex deal with custom User-Agents.

Previously, the AppEngine UA was forced. Now it is only force appended.
https://developers.google.com/appengine/docs/python/urlfetch/?hl=en
reddit_base: Also grab dev AppEngine UAs.

"dev~" is sent when the AppEngine SDK is run on a local machine for
development purposes.
wiki: Replace inner_content nonsense.