appbuilder: implementa grupos para dashboard.

Signed-off-by: Francisco Prates <mad.kanie@gmail.com>
appbuilder: permite hierarquia de componentes de dashboard dentro de
grupos de dashboard.

Signed-off-by: Francisco Prates <mad.kanie@gmail.com>
appbuilder: implementa isometricGrid() para Factory.

Signed-off-by: Francisco Prates <mad.kanie@gmail.com>
tasksel: define propriedades do dashboard.

Signed-off-by: Francisco Prates <mad.kanie@gmail.com>