FIX - changed estimatedHeightForRowAtIndexPath to UITableViewAutomaticDimension because of a SO comment that suggested that this was beind a CoreData error that was occuring when the estimated value was 100 (http://stackoverflow.com/questions/19462645/nsfetchedresultscontroller-attempting-to-insert-nil-object)
FIX - turns off scrolling to fix a bug in which the text would be cut off
REFACTORING - resizing of uitableviewcells because of variable height text views. Focus on the timeline cells