add student view of the quizzes show page

fixes CNVS-11733

test plan:
  - as a teacher
    - create and publish a quiz
  - turn on fabulous quizzes
  - as a student
    - visit the quiz
    - it should not show publish/edit/settings buttons
    - it should show a 'take quiz' button instead (which doesn't work yet)
    - it should no longer show tabs to moderate/stats for the student
    - the design should match up with the mock-ups

Change-Id: Ic244553f6bc54d74a50f5d4641eb2c85d184edce
Reviewed-on: https://gerrit.instructure.com/34597
Reviewed-by: Ahmad Amireh <ahmad@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
QA-Review: Caleb Guanzon <cguanzon@instructure.com>
Product-Review: Derek DeVries <ddevries@instructure.com>