When loading profile fields for registration, do not attempt to fetch field data. See #4362.

git-svn-id: https://buddypress.svn.wordpress.org/trunk@7488 cdf35c40-ae34-48e0-9cc9-0c9da1808c22
Add empty() checks to avoid debug notices when fetching profile fields from an empty field group.

git-svn-id: https://buddypress.svn.wordpress.org/trunk@7489 cdf35c40-ae34-48e0-9cc9-0c9da1808c22
Strict standards compliance in unit test group extensions

git-svn-id: https://buddypress.svn.wordpress.org/trunk@7490 cdf35c40-ae34-48e0-9cc9-0c9da1808c22
Remove duplicate add_user_to_group() utility method from unit test suite

git-svn-id: https://buddypress.svn.wordpress.org/trunk@7491 cdf35c40-ae34-48e0-9cc9-0c9da1808c22
Update travis tests to run against WP 3.7.1, 3.6.1, and 3.5.2 (currently supported versions).

git-svn-id: https://buddypress.svn.wordpress.org/trunk@7492 cdf35c40-ae34-48e0-9cc9-0c9da1808c22
Merge remote-tracking branch 'upstream/master' into xprofile-types