Merge branch '1.2.x'
Merge branch '1.2.x'
Merge branch '1.2.x'
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 '1.3.x'
Merge branch '1.3.x'
Merge branch '1.3.x'
Remove 'hidden' class from Leave Group wrapper in hidden groups

A conflict with WP AJAX Edit Comments was causing the latter plugin to hide the
button incorrectly on hidden groups, with the result that users could not
leave hidden groups. This is a workaround for modifying the plugin.

See #1004
Merge branch '1.3.x'
Syntax error
Merge branch '1.4.x'
Merge branch '1.4.x'