Remove locales, before adding new ones

We've kept translations around forever for each app, this causes issues.

backend/app/apps.py

@@ -150,6 +150,10 @@ def load_appstream(sqldb) -> None:
                     "type": type,
                 }
             )
+
+            for key in p.scan_iter(f"apps_locale:{app_id}:*"):
+                p.delete(key)
+
             for locale, value in apps_locale.items():
                 if app_id in value:
                     p.set(f"apps_locale:{app_id}:{locale}", json.dumps(value[app_id]))
@@ -171,6 +175,7 @@ def load_appstream(sqldb) -> None:
 
         search.delete_apps(apps_to_delete_from_search)
 
+        print("execute")
         p.execute()