started navigation controller for summoners
Several changes

SummonerNC no longer has a root relationship on storyboard.
Instead an instance of SummonerVC is programmitcally pushed.
Currently SummonerVC's summoner info is passed in, but
for recent matches it still uses DataManager.
NOTE: this should be changed so that every SummonerVC
pulls recent matches individually. DataManager should
truly be only for global data like champions, runes ,etc.

SummonerVC now implements a nav bar item & 1 right bar item for region.
More changes to come.