! Try to make sure the DB session serializer is indeed using one we know to be safe (fixes #277)
! Extra sanitisation goodness when searching PMs, making sure to take everything through the query layer (fixes #627)

Signed-off-by: Peter Spicer <sleeping@myperch.org>
Merge pull request #640 from Arantor/release-2.1

! Try to make sure the DB session serializer is indeed using one we know...