fix(navbar): Use a single navbar component everywhere

src/app/admin/admin.module.ts

src/app/admin/admin.scss

...admin/components/admin-header/admin-header.component.html

...admin/components/admin-header/admin-header.component.scss

...p/admin/components/admin-header/admin-header.component.ts

...components/claim-structure/claim-structure.component.html

...ents/deleted-structures/deleted-structures.component.html

...mponents/espace-coop-cnfs/espace-coop-cnfs.component.html

...mponents/manage-employers/manage-employers.component.html

...p/admin/components/manage-jobs/manage-jobs.component.html

...admin/components/manage-users/manage-users.component.html

src/app/admin/components/nav-bar/nav-bar.component.html

src/app/admin/components/nav-bar/nav-bar.component.scss

...ents/structures-list/admin-structures-list.component.html

...ents/structures-list/admin-structures-list.component.scss

...pp/post/components/post-header/post-header.component.html

...pp/post/components/post-header/post-header.component.scss

src/app/post/components/post-header/post-header.component.ts

src/app/profile/edit/edit.component.html

src/app/profile/edit/edit.component.scss