Add headings to state and actions columns
Add headings to state and actions columns

Closes PLAT-3413

Test Plan:
Verify all columns of the new developer key table have
labels.

Change-Id: Iab211f210c24a5602197e9d0bd5c0247a84e0e9c
Reviewed-on: https://gerrit.instructure.com/151349
Tested-by: Jenkins
Reviewed-by: Marc Alan Phillips <b810f855174e0bc032432310b0808df2cf714fbc@instructure.com>
QA-Review: August Thornton <9adc7a1161ddf32ff608de792a7e50179545f026@instructure.com>
Product-Review: Jesse Poulos <0a3f73d5b21621dbbacf36ae20620a7eb669a89e@instructure.com>

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