use dispersy.database.commit() instead
num_seeders should not be None
remove getRecentLivePrefListWithClicklog()
remove _getRecentLivePrefListWithClicklog()
simplify _getRecentLivePrefList()
make _getRecentLivePrefList() inline
remove dependency on SearchDBHandler
remove SearchDBHandler
remove unused imports
remove non-existing create_torrent_signature()
remove ClicklogSearch table and index
Some more head room for the anon download test in the unittests