Group and member template functions should check current group/member as well

[boonebgorges]

Currently we have functions like bp_get_group_name(), which accept a $group object, and falls back on $groups_template->group if no $group is passed. Frustratingly, most of these functions do not work when viewing a specific group. Those functions should fall back on $bp->groups->current_group when possible.

Same thing with members template functions. When possible, fall back on properties of $bp->displayed_user.

[dcavins]

I was thinking about these template functions, too, and offer the attached as one concept toward bringing the template and other functions closer together. In it, I've changed groups_get_current_group() so that it checks the $groups_template global first then goes to the buddypress() second. The result is that it works in a groups loop or within a group (inside or outside the has_groups() loop that builds the group).

@boonebgorges: Was a single group built using bp_has_groups() when you submitted this ticket, or was that done since (which mostly fixed the original issue)?

[dcavins]

An example change.