Merge branch 'develop' of labs.maarch.org:maarch/MaarchCourrier into develop

src/app/contentManagement/controllers/MergeController.php

.../contact/list/contacts-list-administration.component.html

.../contact/list/contacts-list-administration.component.scss

...on/contact/list/contacts-list-administration.component.ts

.../contact/page/contacts-page-administration.component.html

...on/contact/page/contacts-page-administration.component.ts

src/frontend/lang/lang-en.ts

src/frontend/lang/lang-fr.ts

src/frontend/lang/lang-nl.ts

test/unitTests/app/user/UserControllerTest.php