Edits concentrating on Section 7.0

Hi all,

I've continued on several of Heather Wall's technical edits. In addition to formatting and more cosmetic edits, clarifications specific to the use of "Profile API" where I've attempted to tighten up references to Agent Profile API and/or Activity Profile API.  Most of these changes exist in 7.0 Data Transfer, though there have been a few global changes as a result. Please review.