Fixes a bug where new stories would not be displayed immediately after being updated
Initial commit of the category data source
Changes for the category data source
Tweaks to the fetched results controller setup process
Clean up the self references and unlock the lock
Merge pull request #125 from MIT-Mobile/3.6/news-cached-categories

3.6/news cached categories
Merge branch 'refs/heads/3.6/ipad-news' into 3.6/ipad-news-categories-if-no-internet

Conflicts:
	Modules/News/iPad/View Controllers/MITNewsiPadViewController.m
fixing method arguments and category checking