Add Help! label to Menu Item

[jaygilmore]

Added Help! label to the Help Menu Item that was previously represented by the just an icon.

This was to fix for #13485

What does it do?

Provides accessible label for the Help button in the header #13485

Why is it needed?

The current link has no link text and no value for screen readers

How to test

This may require a build and or rerunning setup.

Related issue(s)/PR(s)

Should resolve #13485 by adding aria-label and corresponding text via lexicon to the a of the Help button in the header.

[jaygilmore]

I don't know if this needs the refactoring due to the PSR level errors as I just followed the code pattern of the original file. Can do if required.