[LIB_JOOMLA] Tweak to toolbar code to make sure array indexes exist to avoid accidentally overwriting button params
[LIB_JOOMLA] Tweak to toolbar code to make sure array indexes exist to avoid accidentally overwriting button params

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