This patch adds comments to the template to highlight the markup
structure.
Also changed: Some form hints have been wrapped in <div class="hint"> to
make it consistent with other pages.
This patch should have no effect on functionality.
Signed-off-by: David Nind <david@davidnind.com> Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de> Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>