Update messages.nl.xliff
Update messages.nl.xliff

Added the first 12 missing translations in Dutch. Please merge.
mdzzohrabi/APYDataGridBundle,fastsupply/APYDataGridBundle,fastsupply/APYDataGridBundle,dnacreative/APYDataGridBundle,sygnisoft/APYDataGridBundle,delasallejean/APYDataGridBundle,lukaszsobieraj/APYDataGridBundle,dnacreative/APYDataGridBundle,qferr/APYDataGridBundle,delasallejean/APYDataGridBundle,ibuildingsnl/APYDataGridBundle,ibuildingsnl/APYDataGridBundle,qferr/APYDataGridBundle,tamago-db/APYDataGridBundle,APY/APYDataGridBundle,tomcyr/APYDataGridBundle,unrealevil/GvnGridBundle,unrealevil/GvnGridBundle,b-durand/APYDataGridBundle,Abhoryo/APYDataGridBundle,mdzzohrabi/APYDataGridBundle,Abhoryo/APYDataGridBundle,lukaszsobieraj/APYDataGridBundle