Change all recruited women to MDES 3.2's p_type 14. Closes #3513.

MDES 3.2 introduces two special p_types for PBS-recruited
participants. One of them -- 14 -- applies to all women who could have
been recruited under MDES 3.0. MDES 3.0 was only ever used for PBS, so
it is safe to convert all PBS-eligible women to p_type 14 when
upgrading to MDES 3.2.
Merge pull request #62 from NUBIC/3513-change_p_type_during_migration

Change all recruited women to MDES 3.2's p_type 14 during version migration. (#3513)