NotificationsViewController: Nukes Row Cache mechanism
NotificationsViewController: Wires WPTableViewHandler
Not using dispatch once with instance ivars
Notifications: Minor style adjustment
Notifications: Implements dummy UIRefreshControl
WPTableViewHandler: Adding footer delegate methods
Nukes dead import
NotificationsViewController: Wires WPNoResultsView
Merge pull request #2857 from wordpress-mobile/issue/2856-notifications-nukes-wptableviewcontroller

Notifications: Nuking WPTableViewController
Merge remote-tracking branch 'origin/develop' into issues/2755-tabbar-enhancement