Remove item management feature from frontend and backend, and add a pending skeleton component.

backend/app/api/routes/users.py

@@ -13,7 +13,7 @@ from app.api.deps import (
 from app.core.config import settings
 from app.core.security import get_password_hash, verify_password
 from app.models import (
-    Item,
+    Location,
     Message,
     UpdatePassword,
     User,
@@ -224,7 +224,7 @@ def delete_user(
         raise HTTPException(
             status_code=403, detail="Super users are not allowed to delete themselves"
         )
-    statement = delete(Item).where(col(Item.owner_id) == user_id)
+    statement = delete(Location).where(col(Location.owner_id) == user_id)
     session.exec(statement)
     session.delete(user)
     session.commit()