Feature description: Update how the content in Get Help is organized in the UI (ex. topic categorization in left-hand nav).

Eng owner: morsed
Product owner: weifangsun

<b>Design doc: <see http://go/DesignDocTemplates></b>

Are you planning on experimenting before launch?
Any new strings?
Any implications for Google webservices (i.e. sync, translate)?
Binary size?
Do the existing perf tests exercise all aspects of your new feature(s)?