Bug 24056: Capitalization: Cash Register ID on cash register management page

Bug 24056: Capitalization: Cash Register ID on cash register management page

When editing a cash register, Cash register ID doesn't follow
our capitalization guidelines. This patch fixes that.

To Test:
1) Turn on cash register usage in the system preferences.
2) Add a cash register.
3) Edit the cash register.
4) Note the incorrect capitalization.
5) Apply the patch.
6) Edit the cash register.
7) Note the correct capitalization.

Signed-off-by: George Williams <george@nekls.org>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>