Code review comment for lp:~camptocamp/account-financial-tools/add-manual-line-and-fees-nbi

Thanks Nicolas. A few small remarks up to line 1300:

- l138 typo
- l143 seems like you are copying twice
- l145 (non-blocking) i'm not sure if it's better to set a key to false or remove a key from defaults (like in defaults.pop('field_name', None) )
- "manually_overriden" -> manually_overridden
- l438 "that policy correspond" -> "that the policy corresponds"
- l445 slightly more readable if "if" goes to the next line
- l1013 line -> lines