Tabbed interfaces header changes and consistency changes.

include/staff/apikey.inc.php

include/staff/cannedresponse.inc.php

include/staff/category.inc.php

include/staff/dashboard.inc.php

include/staff/department.inc.php

include/staff/dynamic-form.inc.php

include/staff/dynamic-list.inc.php

include/staff/email.inc.php

include/staff/filter.inc.php

include/staff/helptopic.inc.php

include/staff/page.inc.php

include/staff/plugin.inc.php

include/staff/role.inc.php

include/staff/settings-agents.inc.php

include/staff/settings-pages.inc.php

include/staff/settings-system.inc.php

include/staff/slaplan.inc.php

include/staff/staff.inc.php

include/staff/syslogs.inc.php

include/staff/team.inc.php