[iOS] Flurry Fix. According to documentation start flurry in didFinishLaunching method

iphone/Maps/Classes/MapViewController.mm

@@ -684,8 +684,6 @@ NSInteger compareAddress(id l, id r, void * context)
 
 - (void) OnEnterForeground
 {
-  [[Statistics instance] startSession];
-  
   // Notify about entering foreground (should be called on the first launch too).
   GetFramework().EnterForeground();
 

iphone/Maps/Classes/MapsAppDelegate.mm

@@ -145,6 +145,7 @@ void InitLocalizedStrings()
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
 {
   NSLog(@"application didFinishLaunchingWithOptions");
+  [[Statistics instance] startSession];
 
   InitLocalizedStrings();