[#3752] Adding the question helper to the helper list and marking dialog as deprecated
minor #3794 Adds link to new QuestionHelper (weaverryan)

This PR was merged into the master branch.

Discussion
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Adds link to new QuestionHelper

| Q             | A
| ------------- | ---
| Doc fix?      | no
| New docs?     | no
| Applies to    | 2.5+

Following #3752, this adds question helper to the helper list and marks the dialog as deprecated.

Thanks!

Commits
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eef3313 [#3752] Adding the question helper to the helper list and marking dialog as deprecated