createNewRow = function(aRows, iRow, iIndex, iColumns) {
					aRows[iRow].last = iIndex - 1;
					aRows.push(jQuery.extend({}, oRow));
					iRow++;
					aRows[iRow].first = iIndex;
					aRows[iRow].availableCells = iColumns;
					return iRow;
				}
Calculates the size and the line breaks for a control inside a <code>FormElement</code> element.
This is needed for the rendering.

There are only 2 options to order Labels and Fields
a) On small columns (<=600px) -> Labels above Fields
b) On wide columns (>600px) -> Labels before fields
One Element has 12 cells

@param {sap.ui.core.Control} oField content control
@return {object} An object containing the size, the line-break and spacing information for the different sizes
@private