duplicate id in default theme

[dwenaus]

there is a duplicate id "groups-all" in the html of the default theme. So browsers ignore the second on.
They occur on:
bp-themes/bp-default/groups/index.php
and
bp-themes/bp-default/members/single/groups.php

it makes sense to keep the first one (index.php) as this might be used by some plugin authors and change the second one (groups.php). IN fact the second one should not be called groups-all because it makes no sense.

[johnjamesjacoby]

(In [3045]) Fixes #2437