issue 1004, calculation interims field: make sure the 'Add More' button is displayed
issue 1004, calculation interims field: make sure the 'Add More' button is displayed

Conflicts:
	bika/lims/browser/fields/interimfieldsfield.py

anneline/Bika-LIMS,anneline/Bika-LIMS,DeBortoliWines/Bika-LIMS,labsanmartin/Bika-LIMS,veroc/Bika-LIMS,veroc/Bika-LIMS,labsanmartin/Bika-LIMS,DeBortoliWines/Bika-LIMS,rockfruit/bika.lims,veroc/Bika-LIMS,labsanmartin/Bika-LIMS,DeBortoliWines/Bika-LIMS,rockfruit/bika.lims,anneline/Bika-LIMS