Bug 12564: Fixing capitalisation buttons in inventory tool

Bug 12564: Fixing capitalisation buttons in inventory tool

To Test
1/ Do a search in the inventory tool - view capitalisation errors in lower Buttons
2/ Apply patch
3/ Redo search in the inventory tool
4/ Confirm capitalisation errors are fixed

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Work as described, no koha-qa errors
Fixed capitalization (and typo) on patch bug description :)

Karl, don't forget to assign the bug to yourself :)

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Small template change, no regressions found.

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>