Revert "don’t include RichContentEditor on login page"
Revert "don’t include RichContentEditor on login page"

fixes: COREFE-390

This reverts commit 986ca47f2e2f441c649e49cb4da4adc1d71704ad.

this is to try to fix COREFE-390. I could not repro the bug locally
even when I if I created a quiz with 100 questions but this is the
only commit that we could see would have caused the original bug
so since it was a perf-only change we are going to revert it and see
if it fixes it on beta

test plan:
* see repro steps in COREFE-390
* note, even if you did those steps locally, I could not repro so
  the best test plan would be to try it on beta at the url in that
  jira and see if it is fixed there. I confirmed that it does NOT
  work on beta currently so if it does start working with this change,
  then this is it.

Change-Id: Id7d72833c260423b908569e633e34385828b815e
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/214997
Tested-by: Jenkins
Reviewed-by: Brent Burgoyne <bccf16d7abdd2611580b1cd7d7a6fcc150d619da@instructure.com>
QA-Review: Brent Burgoyne <bccf16d7abdd2611580b1cd7d7a6fcc150d619da@instructure.com>
Product-Review: Brent Burgoyne <bccf16d7abdd2611580b1cd7d7a6fcc150d619da@instructure.com>

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