FEAT #13195 TIME 1:40 add delimeter column label

...n/customField/custom-fields-administration.component.html

...ion/customField/custom-fields-administration.component.ts

...app/indexation/indexing-form/indexing-form.component.html

...d/app/indexation/indexing-form/indexing-form.component.ts

src/frontend/lang/lang-en.ts

src/frontend/lang/lang-fr.ts

src/frontend/lang/lang-nl.ts