Fixed tinting color for MURSwitcherButton and cleaned up setting tint co...

...lors in the navigation area.

Adjusted the coloring of the background behind the switcher to better accommodate white buttons. Also reduced code duplication.
Moved from a dispatch_after on the main thread with a lot of unnecessary low-level GCD code to just calling a function using performSelector:withOption:afterDelay:
Fixed implementation of UITableView reloadSections to do 2 things: a) call begin/endUpdates and b) Not reload the whole tableView after reloading all of the cells. That’s 2 calls to do the same thing, one after each other.