word replacement updates for address supplemental lines
fixes #7345 auto expand preview panel
fixes #7346 fix mailing scheduling
fixes #7344 help text
fixes #7342 auto open address panel
fixes #7339 deselect ethnicity
fixes #7343 date picker range min/max
add comments; remove php4 constructor; whitespace cleanup
code cleanup; refs #7339, #7342, #7343, #7344, #7345, #7346