removed storyboard, renamed EmailListController to EmailListViewController
added performance test to test additional cells. Results are not pretty.
updated to subviews in the email cell
changed property from int to NSInteger. Removed unnecessary getters and setters for property since they are automatically synthesized.
background fix
changed to placeholder for avatar, updated the cell draw
performance updates
added detail view transition
brought in image for long press completed performance improvements

brought long press window to a single view that attaches to a cell and
is rendered via a single image over multiple objects.
Merge branch 'develop'

Conflicts:
	EmailFlow2/EmailListCell.h
	EmailFlow2/EmailListCell.m
	EmailFlow2/EmailListViewController.m