help: prompt for email address when user is not logged in
help: prompt for email address when user is not logged in

fixes CNVS-12002

test plan:
  * enable /plugins/error_reporting
  * open the login page
  * click "Help"
  * click "Report a Problem"
  * verify that there is a field for email address
  * log in
  * click "Help"
  * click "Report a Problem"
  * verify that there is no field for email address

Change-Id: I8ef05bd7e927de25716a3b5b9bc8f8844ed4d74f
Reviewed-on: https://gerrit.instructure.com/32375
Reviewed-by: Jon Willesen <eb5ce5e6a76c243326fecfa94534101600f87bd9@instructure.com>
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>
QA-Review: Caleb Guanzon <54fa1f30d451e4f3c341a8f3c47c9215fd0be9c6@instructure.com>
Product-Review: Braden Anderson <a6cc2cef7d25f27847876bdb81651755fcebacf0@instructure.com>

gbleydon/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,skmezanul/canvas-lms,instructure/canvas-lms,wrdsb/canvas-lms,greyhwndz/canvas-lms,Rvor/canvas-lms,grahamb/canvas-lms,efrj/canvas-lms,gbleydon/canvas-lms,Unow/canvas-lms,dgynn/canvas-lms,efrj/canvas-lms,redconfetti/canvas-lms,va7map/canvas-lms,fronteerio/canvas-lms,wrdsb/canvas-lms,venturehive/canvas-lms,grahamb/canvas-lms,kyroskoh/canvas-lms,redconfetti/canvas-lms,snehakachroo1/LSI_replica,narigone/canvas,utkarshx/canvas-lms,tgroshon/canvas-lms,efrj/canvas-lms,eCNAP/CANVAS,SwinburneOnline/canvas-lms,SwinburneOnline/canvas-lms,antoniuslin/canvas-lms,Jyaasa/canvas-lms,snehakachroo1/LSI_replica,kyroskoh/canvas-lms,shidao-fm/canvas-lms,jay3126/canvas-lms,tgroshon/canvas-lms,antoniuslin/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,venturehive/canvas-lms,djbender/canvas-lms,Rvor/canvas-lms,narigone/canvas,greyhwndz/canvas-lms,kyroskoh/canvas-lms,AndranikMarkosyan/lms,va7map/canvas-lms,grahamb/canvas-lms,fronteerio/canvas-lms,djbender/canvas-lms,wye0220/shindig-canvas,tgroshon/canvas-lms,greyhwndz/canvas-lms,usmschuck/canvas,shidao-fm/canvas-lms,dgynn/canvas-lms,grahamb/canvas-lms,HotChalk/canvas-lms,SwinburneOnline/canvas-lms,shidao-fm/canvas-lms,ShreniiNepal/shrenii_lmp,ShreniiNepal/shrenii_lmp,roxolan/canvas-lms,greyhwndz/canvas-lms,samuels410/greatlakes-lms,jay3126/canvas-lms,leftplusrightllc/canvas-lms,skmezanul/canvas-lms,utkarshx/canvas-lms,leftplusrightllc/canvas-lms,Unow/canvas-lms,sdeleon28/canvas-lms,venturehive/canvas-lms,samuels410/greatlakes-lms,djbender/canvas-lms,sdeleon28/canvas-lms,sfu/canvas-lms,HotChalk/canvas-lms,snehakachroo1/LSI_replica,sfu/canvas-lms,va7map/canvas-lms,fronteerio/canvas-lms,AndranikMarkosyan/lms,wrdsb/canvas-lms,whalejasmine/canvas-lms,kyroskoh/canvas-lms,roxolan/canvas-lms,sdeleon28/canvas-lms,eCNAP/CANVAS,usmschuck/canvas,whalejasmine/canvas-lms,Jyaasa/canvas-lms,jay3126/canvas-lms,samuels410/greatlakes-lms,ShreniiNepal/shrenii_lmp,AndranikMarkosyan/lms,instructure/canvas-lms,utkarshx/canvas-lms,redconfetti/canvas-lms,wrdsb/canvas-lms,dgynn/canvas-lms,usmschuck/canvas,tgroshon/canvas-lms,roxolan/canvas-lms,juoni/canvas-lms,usmschuck/canvas,antoniuslin/canvas-lms,Rvor/canvas-lms,AndranikMarkosyan/lms,grahamb/canvas-lms,instructure/canvas-lms,jay3126/canvas-lms,HotChalk/canvas-lms,ShreniiNepal/shrenii_lmp,roxolan/canvas-lms,juoni/canvas-lms,gbleydon/canvas-lms,instructure/canvas-lms,narigone/canvas,wye0220/shindig-canvas,antoniuslin/canvas-lms,dgynn/canvas-lms,Unow/canvas-lms,venturehive/canvas-lms,fronteerio/canvas-lms,sfu/canvas-lms,matematikk-mooc/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,va7map/canvas-lms,juoni/canvas-lms,Jyaasa/canvas-lms,whalejasmine/canvas-lms,instructure/canvas-lms,matematikk-mooc/canvas-lms,narigone/canvas,juoni/canvas-lms,wye0220/shindig-canvas,eCNAP/CANVAS,SwinburneOnline/canvas-lms,HotChalk/canvas-lms,redconfetti/canvas-lms,snehakachroo1/LSI_replica,efrj/canvas-lms,matematikk-mooc/canvas-lms,Jyaasa/canvas-lms,utkarshx/canvas-lms,leftplusrightllc/canvas-lms,leftplusrightllc/canvas-lms,instructure/canvas-lms,samuels410/greatlakes-lms,skmezanul/canvas-lms,shidao-fm/canvas-lms,sdeleon28/canvas-lms,Rvor/canvas-lms,skmezanul/canvas-lms,whalejasmine/canvas-lms,matematikk-mooc/canvas-lms,eCNAP/CANVAS