sectionPageA: always pack in correct location in grid
sectionPageA: always pack in correct location in grid

The section page code previously only worked if you first set
the title label, and then packed a section.

It's a little nicer if we allow the section page setters to be
called in any order.
[endlessm/eos-sdk#3160]

endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib