* Compare all fields from template
Not all fields were properly compared with previous code. This means also
to exclude some of them, but now we have a full and extensible system.
* Optimize cached method
* Generate accounts and fiscal positions using Odoo methods (tax already did)
* README by fragments
* Add tests up to full coverage
- New-style license headers.
- Remove .pot file.
- Remove tax codes stuff, now removed from v9.
- Refactor methods for search, create, update, delete. Now they are smaller, fitter, happier, more productive.
- Only update fields that have any kind of change on any updated record.
- Place the wizard in the configuration page, instead of its own menu item.
- Display amount of disabled taxes at ending page.
