- add attrstrings for all the important mapper() attrbutes, [ticket:2094].

- add attrstrings for all the important mapper() attrbutes, [ticket:2094].
Sticking with quotes here since that's what's used everywhere else.
- rename "API Documentation - XYZ" to "XYZ API".
- move connection API docs to the bottom of that section.  still
floating between separate API sections vs. inline API sections, not
sure how to be consistent.
- fix outdated paragraph about derived_attrbutes
- other target function fixes