Add concept of permissions for users, orgs, search

bootstrap.php

client.inc.php

include/ajax.orgs.php

include/ajax.users.php

include/class.nav.php

include/class.organization.php

include/class.role.php

include/class.search.php

include/class.staff.php

include/class.ticket.php

include/class.user.php

include/i18n/en_US/role.yaml

include/staff/org-view.inc.php

include/staff/orgs.inc.php

include/staff/templates/user-import.tmpl.php

include/staff/templates/user-lookup.tmpl.php

include/staff/templates/users.tmpl.php

include/staff/ticket-open.inc.php

include/staff/user-view.inc.php

include/staff/users.inc.php