Bug 37274: Use the Toolbar component in all Vue components

Bug 37274: Use the Toolbar component in all Vue components

We have a Toolbar component that must be used everywhere for
consistency.
This patch adds it when missing:
* ERM/AgreementsShow
Show an agreement

* ERM/EHoldingsLocalPackagesShow
Show a local package
* ERM/EHoldingsLocalTitlesShow
Show a local title

* ERM/LicensesShow
Show a license

* ERM/UsageStatisticsDataProvidersShow
Show a data provider

* Preservation/SettingsProcessingsShow
Show the the settings of a processing (Preservation module)

Confirm that the "Edit" and "Delete" icons are now replaced with buttons
(in a toolbar) on those views.

Signed-off-by: Pedro Amorim <pedro.amorim@ptfs-europe.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>