GENE — order attribute be be added for BioDataCube in model (and, hence, the DTD)

Recommend that, in additional to MAGE Issue 11, an order attribute be added
for
BioDataCube in the model (and, hence, the DTD). This will specify the order
of
the dimensions in the accompanying data specified by either the DataInternal
or
DataExternal element. In addition, the rule specifying "the first dimension
matches
order of BioAssayDimension, second, the DesignElementDimension and the
third, the
QuantitationDimension" can be removed.
Attribute to add: BioDataCube.order
type: enum

default: 'BDQ'

The following will be effected by this change:
The model and MAGE.xmi file.
The DTD
Section 3.1.12, "BioAssayData" of the submission

(MAGE Issue 25)

see below