KRACOEUS-7604 : propodev budget income page

Another partial work for KRACOEUS-7604 ( propodev budget income page)
As long as you come back to it its fine this way for now. You can do something like p:readOnly="@{!#addLine}"(might be a little off) that way it will be read only if it isn't in the add line. And use p:displayOnlyReplacement(again might be alittle off on the name) to update the read only display.