Use legacy BP user queries for now

The introduction of BP_User_Query in OL 1.2.2 (BP 1.7) broke the custom
member directory filters. This changeset temporarily reintroduces the
legacy queries, so that the filters continue to work.

See #927
Merge branch '1.2.x' of github.com:livinglab/openlab into 1.2.x
Bug #917 - Help Silo Navigation- PHP and Bug #716 - Incorrect Help link in footer
Bug #595 - Course creation template needs permissions conditional
Bug #892 - Sign-Up: Add links to Terms of Use, Privacy Policy
Merge branch '1.2.x' of github.com:livinglab/openlab into 1.2.x
Merging local 1.2.x into 1.3.x