Add Getting Help with ODK reference page

[adammichaelwood]

A new version of this:
https://opendatakit.org/help/

[iAyon]

Shouldn`t we integrate a FAQ section in this page with some common questions so that others can look into it if they require for reference ? The FAQ section will serve the motive of this help page in a better manner .

[gaurav-goswamii]

I’m interested in working on this issue. I noticed that the current documentation already contains help and troubleshooting information in several places. Would a small central “Getting Help” page that consolidates the existing support resources still be useful???