added kaminari
added jquery infinite scroll plugin
requires infinite scroll
modified activities controller index action
decided to not use jquery plugin
moved is on screen function to application
decided to use will paginate instead
feed infinite scrolling now works
modified controller
added callback
added infinite scrolling for profile feed
added spinner to feed
made filters show on mobile
Merge pull request #87 from derekdapp/derek/feed_pagination

Derek/feed pagination