Bug 27410: Update intranet-tmpl/prog/en/modules/members/maninvoice.tt to reflect...

Bug 27410: Update intranet-tmpl/prog/en/modules/members/maninvoice.tt to reflect ACC2

Test Plan:
1. Open intranet-tmpl/prog/en/modules/members/maninvoice.tt
2. Search for instances of 'input type="number"'
3. If none are found then patch was successful

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
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>