add index on feeds(title) #57

the idea is that this will reduce the number of requests
being sent, due not sending the whole feeds table

jobs/go/src/db.go

@@ -20,6 +20,7 @@ func initTables(db *sql.DB) error {
       title  text,
       url    text    not null unique
     ) strict;
+    create index feedstitle on feeds(title);
 
     create table feeds_details (
       feedid      integer not null,