Escape student answers in FIMB questions
Escape student answers in FIMB questions

Closes CNVS-10154

Test plan
---- ----

  - create a quiz with a FIMB question and take it
  - fill in some answers with single-apostrophes in them (ie: foo'bar)
  - refresh the take-quiz page
  - verify that the answers are still there

Also, you can see the screencast attached to the ticket for info on
reproducing the issue.

Change-Id: I3196860866dfc586b400b241c89421b5ca16ec00
Reviewed-on: https://gerrit.instructure.com/29565
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>
Reviewed-by: Derek DeVries <ff87a0776152510efd53bb1f4ea089dbbc90e730@instructure.com>
QA-Review: Myller de Araujo <e5c7c5e1b7f2ce5e9870cc98ec52b20b3006cb48@instructure.com>
Product-Review: Ahmad Amireh <a53a33601b8dd9d06ae9e50f1f30fbe957aba866@instructure.com>

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