Ahodges/documentation/doc158

@WatsonEmily please share with PMs who have worked through this process with data czars before... I'd love to get their feedback on level of detail and completeness.
@rocha and @stroilova , please let me know if this information is accurate (or designate others in Analytics).
@mhoeber and @srpearce , your feedback always welcome.

Is heading formatting different for Analytics docs? In Building and Running and edX Course, titles use pound signs above and below text, H1s use asterisks above and below, H2s use equal signs above and below, and H3s use asterisks below.