Ember Quiz Stats - File Upload & Formula

Render question statistics for those question types similar to Essay.
File Upload should include a link to download all submissions too.

QuizSerializer was updated to include the submission ZIP download URL.

Closes CNVS-12988

TEST PLAN
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  - using your data set from https://gerrit.instructure.com/#/c/35112/
    - verify that the score chart renders with the student scores
    - verify that you get a link to Download All Files for FUpload
      questions
    - verify that the "Attempts: x out of Y" reads correctly based on
      the "responses" field and the total participant count,
      respectively
    - tooltips and chart interactivity like that for Essay

Change-Id: I4a77631491b169106e2eb677b21c1f30f3ca9440
Reviewed-on: https://gerrit.instructure.com/35113
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Jason Madsen <jmadsen@instructure.com>
QA-Review: Caleb Guanzon <cguanzon@instructure.com>
Product-Review: Ahmad Amireh <ahmad@instructure.com>