focus on label of kyle menu instead of input
focus on label of kyle menu instead of input

fixes ADMIN-324

Test Plan:
- Scroll over horizontally to a role that
  isn't initially shown on the page.
  (It may help to shrink your browser window
  down so that a horizontal scrollbar appears.
- Attempt to change a permission.
- Notice the page jumps back to the beginning.

Change-Id: Iad411375aa7731e6194496d069c256ca5aa721ba
Reviewed-on: https://gerrit.instructure.com/131987
Reviewed-by: Venk Natarajan <f9eab59b292314637a3c917fea4742741e36a19b@instructure.com>
Tested-by: Jenkins
QA-Review: Deepeeca Soundarrajan <5bcd4b623f00b7fc2942cd1c65c245b30a48a61f@instructure.com>
Product-Review: Steven Burnett <a0b450117c5d20a22d5c4d52bb8ae13adee003d8@instructure.com>

instructure/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,instructure/canvas-lms