Revert "Greatly Improve Torrentz Reliability"

This reverts commit 632b4afc5facdc77b7976d4ecdd6d6f630b97cfc.
Greatly Improve Torrentz Reliability

Borrow's the KickAss provider's string builder to support scene names.

_doSearch is simplified to support the new strings, incidentally fixing
air-by-date shows.

Cache now only looks for tv results.