Adds bulk check capability to WG Users page

[dcavins]

This is useful functionality to be able to see all unchecked users and bulk check them, but I think my approach is kind of a hack. Problems: I had to include the wangguard_recheck js function in my addition (console was returning a function not defined error, even though the function exists in the code high up on the page. Could be a scope problem.)

Also added in another way to see unverified or pending members which is useful for BP sites. (Shows all users who have a user_status other than 0.)