Fix duplicate feed listing bug and fix issus with remembering folder collapse/expande perferences in main feed list view
Moving task queue from postgres db backed to redis backed.
Merge branch 'master' of https://github.com/samuelclay/NewsBlur
Prevent force close in SetupCommentSectionTask if there is no data in the reply user cursor.
Cleanup comment views.

1) Don't show images for users who shared and commented on a story as it uses too much vertical space.
2) Don't show images for users who liked comments as they overlap with text.
Adding Paypal API.
Merge branch 'master' of https://github.com/samuelclay/NewsBlur
Merge branch 'master' into queue

* master:
  Adding Paypal API.
Fixing feeds that fall through.
Migrating original page servers and munin servers.
Ripping out memcache in favor of redis.
Changing dev/debug host for socketio.
Fixing haproxy install.
Moving elastic search hosts.
Merge branch 'master' into queue

* master:
  Moving elastic search hosts.
  Fixing haproxy install.
  Changing dev/debug host for socketio.
  Ripping out memcache in favor of redis.
  Migrating original page servers and munin servers.
Only need next scheduled update.
Handling decayed feeds with no more active subscribers. They don't get returned to the scheduled_updates queue until there are enough active users.
Merge pull request #128 from lance0428/master

Fix duplicate feed problem and folder collapse/expand bug in main feed list view
Giving error on empty mark read endpoint.
Revert change that disabled user images for shared/commented on a story and liked comments