make tabBarController unavailable, use rootTabBarController
make tabBarController unavailable, use rootTabBarController

tabBarController is nil (since this VC contains it), so we should always
use rootTabBarController. this caused issues where the app wouldn't show
"Explore" tab when nearby/random shortcuts were selected, and possibly
other issues

montehurd/apps-ios-wikipedia,wikimedia/apps-ios-wikipedia,julienbodet/wikipedia-ios,wikimedia/wikipedia-ios,montehurd/apps-ios-wikipedia,montehurd/apps-ios-wikipedia,anirudh24seven/wikipedia-ios,anirudh24seven/wikipedia-ios,anirudh24seven/wikipedia-ios,wikimedia/wikipedia-ios,bgerstle/wikipedia-ios,wikimedia/wikipedia-ios,wikimedia/apps-ios-wikipedia,julienbodet/wikipedia-ios,josve05a/wikipedia-ios,bgerstle/wikipedia-ios,wikimedia/wikipedia-ios,josve05a/wikipedia-ios,julienbodet/wikipedia-ios,bgerstle/wikipedia-ios,josve05a/wikipedia-ios,wikimedia/apps-ios-wikipedia,montehurd/apps-ios-wikipedia,bgerstle/wikipedia-ios,josve05a/wikipedia-ios,julienbodet/wikipedia-ios,anirudh24seven/wikipedia-ios,josve05a/wikipedia-ios,wikimedia/wikipedia-ios,wikimedia/wikipedia-ios,julienbodet/wikipedia-ios,wikimedia/apps-ios-wikipedia,bgerstle/wikipedia-ios,wikimedia/wikipedia-ios,anirudh24seven/wikipedia-ios,montehurd/apps-ios-wikipedia,montehurd/apps-ios-wikipedia,montehurd/apps-ios-wikipedia,bgerstle/wikipedia-ios,wikimedia/apps-ios-wikipedia,julienbodet/wikipedia-ios,josve05a/wikipedia-ios,julienbodet/wikipedia-ios,wikimedia/apps-ios-wikipedia,julienbodet/wikipedia-ios,bgerstle/wikipedia-ios,anirudh24seven/wikipedia-ios,wikimedia/apps-ios-wikipedia,josve05a/wikipedia-ios,montehurd/apps-ios-wikipedia,wikimedia/apps-ios-wikipedia,anirudh24seven/wikipedia-ios,josve05a/wikipedia-ios,bgerstle/wikipedia-ios,anirudh24seven/wikipedia-ios