* show partner name at the top.
* simplify view logic for `name` and `ref` printing.
* fallback to journal entry `ref` when the journal item has no
`ref` set.
* little query formatting changes to enhance readability.
By default we checked for an empty data dict in _get_report_values
however the mail template sends a file type and editor key by default.
We now check if the required company_id is in the dictionary. We also support
supplying force_company in context for setting the company for auto generated
emails.
Lois Rilo
mreficent
LGodoo
Graeme Gellatly