get_txs_to_rebroadcast was beinf triggered based on received transactions indstead of stored txs. Fixing that.
Some of the names in the Responder were poorly picked (not descriptibe enough). Tries to fix that.
``Job`` class has been renames to ``TransactionTracker``.
``add_response`` has been renamed to ``handle_breach`` and ``create_job`` to ``add_tracker``.
All the variables that has `job` on it have already been updated.