FEAT #10529 TIME 2:30 add gen separator + saving actions

src/app/entity/controllers/EntitySeparatorController.php

.../separator/print-separator/print-separator.component.html

...pp/separator/print-separator/print-separator.component.ts

src/frontend/lang/lang-en.ts

src/frontend/lang/lang-fr.ts

src/frontend/lang/lang-nl.ts