Bugfix: Should prevent random underlines making it into comments
FeedActivity: Remove borders
OAuth utilities: Add caching support to fetchAuthenticated. Make it more robust.
Implement Object caching. ObjectActivity passes through proxyURLs to ObjectService
FeedActivity: Pass proxyURL through to ObjectActivity
ObjectService now has a "purge" method
Separate the actual business of posting an activity into its' own class
Add the ability to like objects