install/update-27.sql

   1 create index podcast_language on podcast(language);
   2 create index episode_language on episode(language);
   3
   4 create index toplist_subsciptions on toplist(subscription_count);
   5 create index timestamp on episode(timestamp);
   6 create index last_update on episode(last_update);
   7 create index outdated on episode(outdated);
   8 create index email on auth_user(email);
   9 create index deleted on device(deleted);
  10