make locked field sortable in host table

use 'locked' filed as table column but
change the text on the fly using preprocessrow

Signed-off-by: Julius Gawlas <julius.gawlas@hp.com>
prevent exception when user select paltform or labeles to sort by

since thes are derived columns they are not handled
by default sorting mechanism - instead inform the user
that columns are not sortable

Signed-off-by: Julius Gawlas <julius.gawlas@hp.com>
prevent sorting on profile column

since this is not supported display message
informing the user instead of throwing exception

Signed-off-by: Julius Gawlas <julius.gawlas@hp.com>
prevent sorting on profile column

instead tell user that column is not sortable

Signed-off-by: Julius Gawlas <julius.gawlas@hp.com>
fixing sorting for Jobs table

- make created sortable field
- prevent sorting on status, display friendly message instead of error

Signed-off-by: Julius Gawlas <julius.gawlas@hp.com>