add aria-labels to unclear question group form elements
add aria-labels to unclear question group form elements

fixes CNVS-6540
this adds aria-labels to a compact set of form elements in the question
group form.

Change-Id: I2186eb2e499527b8fa5aab0339bcc925c8d419fe
Reviewed-on: https://gerrit.instructure.com/23637
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>
Reviewed-by: Derek DeVries <ff87a0776152510efd53bb1f4ea089dbbc90e730@instructure.com>
QA-Review: Myller de Araujo <e5c7c5e1b7f2ce5e9870cc98ec52b20b3006cb48@instructure.com>
Product-Review: Josh Simpson <bfb4987b134a00f73d881fff5113b1d5fa1876bc@instructure.com>

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