[fix] Better finding of super group PHP pages
[fix] Better finding of super group PHP pages

Previously, super group PHP pages were found by taking the request path
and removing '/groups/{group_alias]/' to then use the remainder of the
request path to find the page.  This caused issues with any page that
had the URI prefixed (such as '/communities/groups/{group_alias}/...".

Fixes: https://qubeshub.org/support/ticket/1102

zooley/hubzero-cms,anthonyfuentes/hubzero-cms,zweidner/hubzero-cms,zweidner/hubzero-cms,anthonyfuentes/hubzero-cms,zweidner/hubzero-cms,zooley/hubzero-cms,zooley/hubzero-cms,anthonyfuentes/hubzero-cms,anthonyfuentes/hubzero-cms,zooley/hubzero-cms,zweidner/hubzero-cms