FEAT #9511 Check entities modal + check entities in update

src/app/template/controllers/TemplateController.php

src/app/template/models/TemplateModelAbstract.php

src/core/lang/lang-en.php

src/core/lang/lang-fr.php

src/core/lang/lang-nl.php

src/frontend/app/administration/administration.module.ts

...emplate-administration-checkEntities-modal.component.html

...template/template-administration-checkEntities-modal.scss

...istration/template/template-administration.component.html

...inistration/template/template-administration.component.ts

src/frontend/lang/lang-en.ts

src/frontend/lang/lang-fr.ts

src/frontend/lang/lang-nl.ts