feat(ui): update admin section

.vscode/settings.json

src/app/admin/admin.scss

...ponents/lockdown-info/manage-lockdown-info.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.ts