Bug 15072: Breadcrumbs and titles inconsistent in Label creator

Bug 15072: Breadcrumbs and titles inconsistent in Label creator

This patch makes the page title and breadcrumbs more consistent.
It does so by removing some text (Manage...) and using Edit (id) and Create
on building both the breadcrumbs and titles.

To test:
- Traverse all the Label creator options
=> FAIL: the texts are not consistent and don't match what we use in the patron card creator.
- Apply the patch
=> SUCCESS: Terminology is consistent, titles and breadcrumbs show the same information
- Sign off :-D

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>