Considerable cleanup and merge

src/views/ContactQRScanShowView.vue

@@ -64,7 +64,9 @@ export default class ContactQRScanShow extends Vue {
     } else {
       const identity = JSON.parse(account?.identity || "null");
       if (!identity) {
-        throw new Error("No identity found.");
+        throw new Error(
+          "An ID is chosen but there are no keys for it so it cannot be used to talk with the service."
+        );
       }
 
       const publicKeyHex = identity.keys[0].publicKeyHex;