Update vancouver.csl

Changes: 
+ display "inventor" after inventor's name
+ correctly display webpages (according to 2011 update)
+ display PMCID, or PMID (if available)
On Saturday, July 5, 2014, Rintze M. Zelle <notifications@github.com> wrote:

> In vancouver.csl:
>
> > @@ -31,6 +31,10 @@
> >      <terms>
> >        <term name="retrieved">available</term>
> >        <term name="section" form="short">sect.</term>
> > +      <term name="original-author">
> > +        <single>inventor</single>
> > +        <multiple>inventors</multiple>
> > +      </term>
>
> @fbennett <https://github.com/fbennett>, what would be the advantage of
> that over just adding additional, more specific terms and author-roles?
>
 Just thought it might help keep styles in step on the meaning of generic
fields in particular item types. One place where that might be an issue is
in the multimedia types. Just adding label terms and letting styles control
their association with variables is certainly simpler to implement.


> I'm opposed here since there isn't a logical connection between
> "original-author" and an inventor role.
>
No argument there.


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> <https://github.com/citation-style-language/styles/pull/1013/files#r14570667>
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