Made google-play login working again, and fixed numerous bugs

lib/view/settings/settings.dart

@@ -53,8 +53,11 @@ class _SettingsState extends State<Settings> {
                     onConfirm: () {
                       SharedPreferences.getInstance().then((value) => {
                         value.clear(),
-                      }).then((value) {
-                        AccountData().removeData(context);
+                      }).then((value) async {
+                        PaintingBinding.instance.imageCache.clear();
+                        Provider.of<SettingsProvider>(context, listen: false).reset();
+                        const CacheView().clear();
+                        AccountData().removeData(context: context);
                         Navigator.popUntil(context, (route) => !Navigator.canPop(context));
                       });
                     },