Fix/properly reset cache and queues on server url change and backup import (#725)

* Reset cache on server url change

* Reset image queue

* Completely reset apollo store

src/lib/requests/RequestManager.ts

@@ -409,6 +409,12 @@ export class RequestManager {
         this.graphQLClient.updateConfig();
     }
 
+    public reset(): void {
+        this.graphQLClient.client.resetStore();
+        this.cache.clear();
+        this.imageQueue.clear();
+    }
+
     public getBaseUrl(): string {
         return this.restClient.getBaseUrl();
     }
@@ -2143,8 +2149,7 @@ export class RequestManager {
         );
 
         result.response.then(() => {
-            this.graphQLClient.client.cache.reset();
-            this.cache.clear();
+            this.reset();
         });
 
         return result;