OZG-7474 Use new ghost buttons

...ainer/forward-by-ozgcloud-button-container.component.html

...loeschen-button/endgueltig-loeschen-button.component.html

...on/loesch-anforderung-zuruecknehmen-button.component.html

...anfordern-button/loeschen-anfordern-button.component.html

.../postfach-mail-button/postfach-mail-button.component.html

...libs/ui/src/lib/ui/back-button/back-button.component.html

...ainer/assign-user-profile-button-container.component.html

...ns/abschliessen-button/abschliessen-button.component.html

...ib/buttons/annehmen-button/annehmen-button.component.html

...uttons/bearbeiten-button/bearbeiten-button.component.html

...uttons/bescheiden-button/bescheiden-button.component.html

.../buttons/verwerfen-button/verwerfen-button.component.html

...dereroeffnen-button/wiedereroeffnen-button.component.html

...ns/zurueckholen-button/zurueckholen-button.component.html

...urueckstellen-button/zurueckstellen-button.component.html

...-create-button/wiedervorlage-create-button.component.html