don't use quiz arrows for unanswered quiz file upload questions
don't use quiz arrows for unanswered quiz file upload questions

test plan:
  - as a student, take a quiz with a file upload question, but don't
    answer the question.
  - when you click "Submit Quiz", and get taken back to the show page,
    you should see "Unanswered" next to the question heading (question
    name), but you should not see "You Answered" in a red quiz arrow.
    You should also not see a red-bordered box that contains nothing.
  - Grade the submission as the teacher
  - As the student and the teacher(in speedgrader view), you should not
    see "You Answered" with a an arrow pointing to a redbox containing
    nothing.

fixes CNVS-5762

Change-Id: Ib3abb7961b25754f95ba321c089fa14dfd3985a9
Reviewed-on: https://gerrit.instructure.com/20432
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>
Reviewed-by: Eric Berry <b4e131942074b4e4dafdcc14a63e85b7d8e18577@instructure.com>
QA-Review: Myller de Araujo <e5c7c5e1b7f2ce5e9870cc98ec52b20b3006cb48@instructure.com>
Product-Review: Stanley Stuart <2b43fb8b7a234825d50dd49ce7892d78a59da8f3@instructure.com>

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