Bug 8377: Followup move style in a css file and do not pass template to a pm

Bug 8377: Followup move style in a css file and do not pass template to a pm

1/ It's better to set style of the video marked in a css file.

2/ Replace some
  for my $i in (0..#$array)
with
  for my $element in (@array)

3/ the routine in a pm returns a hash not the $template variable

Signed-off-by: Mirko Tietgen <mirko@abunchofthings.net>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>