The My Account page docs were pretty out-of-date, lacking changes made

since Review Board 7. It was also fairly inconsistent on how it

presented available options and descriptions.
This reworks sections of the page to provide more guidance and less

dense text. It also adds the missing settings, including:


The new Ship It! confirmation and spell check settings.


The Appearance page, added in Review Board 7.


Anchors have been added throughout the page to facilitate linking to

sections from other pages and release notes.

Built the docs. Checked for bad links and build issues.