Bug 34391: Fix inconsistencies in cash registers titles, breadcrumbs, and headers

Bug 34391: Fix inconsistencies in cash registers titles, breadcrumbs, and headers

Fix inconsistencies in cash register page titles, breadcrumbs, and
header

This patch fixes a couple of inconsistencies in the cash register
administration page, making sure the page title, breadcrumb
navigation, and page headers are consistent with each other.

To test, apply the patch and go to Administration -> Cash register. Test
each variation of the page:

- Main page
- New cash register
- Modify cash register

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>