Getting the User Guide into shippable state

1.) Including all non-empty addon .adocs from the main .adoc
2.) Fixing images, tables, overlowing text, and other formatting issues

Change-Id: I0242649abc96a39552089d8664c0094a193670f8
Signed-off-by: Colin Dixon <colin@colindixon.com>
Merge "Getting the User Guide into shippable state"