Merge pull request #29 from ledgersmb/1.3

sync over 1.3 branch
Follow up to (dd0565e2f8e6) fixing up the logic identifying tax accounts
 when reversing manual taxes.
(grafted from 854ff1bf7e149f4734b32bcc7936a573bad5421f)

--HG--
extra : source : 854ff1bf7e149f4734b32bcc7936a573bad5421f
Merge pull request #138 from ehuelsmann/1.3

1.3: Follow-up to manual tax reversal