Updated version, standardized quotes, deleted test_page

lib/providers/apps_provider.dart

@@ -113,9 +113,6 @@ class AppsProvider with ChangeNotifier {
           cancelExisting: true);
       await FGBGEvents.stream.first == FGBGType.foreground;
       await notificationsProvider.cancel(completeInstallationNotification.id);
-      // We need to wait for the App to come to the foreground to install it
-      // Can't try to call install plugin in a background isolate (may not have worked anyways) because of:
-      // https://github.com/flutter/flutter/issues/13937
     }
   }
 

lib/providers/source_provider.dart

@@ -85,7 +85,7 @@ class App {
 
 escapeRegEx(String s) {
   return s.replaceAllMapped(RegExp(r'[.*+?^${}()|[\]\\]'), (x) {
-    return "\\${x[0]}";
+    return '\\${x[0]}';
   });
 }