message: Use input in new collaborator search
diff: .new-collaborator
  .new-collaborator__close.js-collaborator-close &times;
  - input.new-collaborator__search(placeholder="Search users (or enter email)")
  + input.Input.Input--size-xs.js-collaborator-input(placeholder="Search users (or enter email)")
  .new-collaborator__results.js-collaborator-results
  //- rendered on the client
  \ No newline at end of file
  