using pageDown Markdown library, fixing autolinking.  created app.helpers.textFormatter, which takes care of text formatting; functions can be called individually throughout the app

remove cache counter for photos, as it was causing too many edge-case errors & added complexity across models

fix #2627 (webfinger produces 500 error, and refactor a little to encapsulate into Webfinger object a bit more

removing photos_count method from StatusMessage in hopes of fixing the counter (still a bit confused, though...)

remove ajax_stream? logic from streams now that we're using backbone & never ajaxing on mobile; remove unreferenced community_spotlight stream & controller

add/refactor normalize_pod_services so configured services is always defined regardless if SERVICES are set up

This reverts commit c61e84bc, reversing
changes made to b88899ff.