Only load the WordPress/Community Profile tabs in user-edit.php when appropriate

They should not be loaded outside the network admin when bp_core_do_network_admin()
is true.

Fixes #5464

Props imath

git-svn-id: https://buddypress.svn.wordpress.org/trunk@8162 cdf35c40-ae34-48e0-9cc9-0c9da1808c22