[code cleaning] Empty default dataset in trunk

Hi,

It seems that the fact that freshly installed trunk showning only home,
about and logout is normal as the tables phpgw_locations is not filled
and phpgw_acl only filled with 3 lines with acl_rights = 1 and
location_id = 0

If my investigations were correct it seems that these default values are
inserted at install time by phpgwapi/setup/test_data.inc.php

In can put inserts there but the question is : what are the datas
required to start ( iow login as an administrator and see at least admin
and preferences)

regards,
Maât