Add a list of contributors

taken from the x_contributors META attribute.

I strip the emails from the contributors, because we don't want
an email straight on a webpage.

I also see if the name is actually a CPAN ID, and if so go a little fancier.

To see an example, look at Test-Strict.
recognize emails @cpan.org as pause ids

gabor++ for the idea
put the gravatar at the front (prettier)
add back the div in author-pic

... as it was indeed causing problems with the
author page. monken++
move js to assets
changing to the new x_contributor structure

... with a little automatic convertion
done for testing with the current
structure
remove testing code
create struct from 'name <email>'

Algorithm is dead simple. Entry looks like
'Name <email>', the email will be extracted.
Otherwise, the entry is considered to be the name
and that's it. And if the email has a
cpan.org domain, it's taken to be a pause id. That's it.
Merge pull request #781 from yanick/contributors

add list of contributors for releases