Changed auth web view to full screen

LibremSocial/MSAuthStore.m

@@ -270,6 +270,7 @@
     
     oauthController.view.frame = frame;
     oauthController.delegate = self;
+    oauthController.modalPresentationStyle = UIModalPresentationFullScreen;
     [[[UIApplication sharedApplication] topController] presentViewController:oauthController animated:YES completion:^{
         
     }];