spec: add tiny-mce italic button check
spec: add tiny-mce italic button check

Change-Id: I901246674e3b1b95aecbdaf01a28c147b3fe8d97
Reviewed-on: https://gerrit.instructure.com/65277
Tested-by: Jenkins
Product-Review: Jeremy Putnam <b030d6d6f199f844ec424882be473c2ab9adc93b@instructure.com>
QA-Review: Jeremy Putnam <b030d6d6f199f844ec424882be473c2ab9adc93b@instructure.com>
Reviewed-by: August Thornton <9adc7a1161ddf32ff608de792a7e50179545f026@instructure.com>

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