feat: Tick all levels that the user has completed

backend/src/security/auth.ts

@@ -27,15 +27,19 @@ export async function performLogin(username: string, password: string, db: Db):
             token: sessionToken,
         });
 
-        return {
-            username: user.username,
-            uid: user.uid,
-            showWelcome: user.showWelcome,
-            score: user.score,
-            classId: user.classId,
-
+        // Return the user, but remove all undeeded data
+        let copy = Object.assign({}, user, {
             sessionToken,
-        };
+        });
+        delete copy._id;
+        delete copy.hash;
+        delete copy.salt;
+        delete copy.lastReview;
+        delete copy.lastLevel;
+        delete copy.vocabMetadata;
+
+
+        return copy;
     } else {
         // It does not matter what we throw
         throw new Error("LOL");