`magit-refresh-commit-buffer': pass REV *after* options

Strictly speaking, we can pass the REV in between the options
without causing any trouble, but that doesn't mean we should...

Signed-off-by: Pieter Praet <pieter@praet.org>
`magit-format-commit': pass REV *after* options

Strictly speaking, we can pass the REV in between the options
without causing any trouble, but that doesn't mean we should...

Signed-off-by: Pieter Praet <pieter@praet.org>
Merge pull request #928 from praet/args-order

Args order