Remove Roboto fonts, switch to iOS app delegate for tvOS, and add stream view and loading view

Limelight/AppDelegate.m

@@ -17,16 +17,6 @@
 static NSOperationQueue* mainQueue;
 
 #if TARGET_OS_IPHONE
-- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
-{
-    [[UILabel appearance] setFont:[UIFont fontWithName:@"Roboto-Regular" size:[UIFont systemFontSize]]];
-    [[UIButton appearance].titleLabel setFont:[UIFont fontWithName:@"Roboto-Regular" size:[UIFont systemFontSize]]];
-    [[UISegmentedControl appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:
-                                                             [UIColor whiteColor], NSForegroundColorAttributeName,
-                                                             [UIFont fontWithName:@"Roboto-Regular" size:[UIFont systemFontSize]], NSFontAttributeName, nil] forState:UIControlStateNormal];
-    
-    return YES;
-}
 
 - (void)applicationWillResignActive:(UIApplication *)application
 {