Fatal call to bp_activity_get_permalink() if activity updates have been used but subsequently disabled

[boonebgorges]

In the members loop (and maybe elsewhere), bp_get_member_latest_update() tries to show the latest update. We bail out of that function if the member's latest_update field is empty, which it will be if activity was never enabled. However, that field may be populated if activity *was* once enabled, which means that we won't bail, and we hit a fatal error later in the function with bp_activity_get_permalink().

There are probably fancy ways to fix this, but I suggest a simple bp_is_active() check. See 01.patch.

[johnjamesjacoby]

Looks good to me.

[boonebgorges]

(In [5270]) Don't try to get activity permalink in bp_get_member_last_update() if activity component is disabled. Fixes #3691.

[boonebgorges]

(In [5271]) Don't try to get activity permalink in bp_get_member_last_update() if activity component is disabled. Fixes #3691.