added generic uimapper

+import ARCS from '../build/arcs.js';
+
+let UIMapper ;
+
+UIMapper = ARCS.Component.create(
+    function(obj) {
+        let self = this;
+        
+        // returns a map function 
+        const mapFunction = function(param, field) {
+            let fields = field.split('.');
+            let params = param.split('.');
+            return function() {
+                let eltField = document.getElementById(fields[0]);
+                for(let i=1; i < fields.length-1; i++) {
+                    eltField = eltField[fields[i]]; 
+                }
+                let value = arguments[params[0]];
+                for (let i=1; i < params.length; i++) {
+                    value = value[params[i]];
+                }
+                eltField[fields[fields.length-1]] = value;                
+            }
+        };
+        
+        
+        for(let p in obj) {
+            let slotName = p.name;
+            let slotFunction = function(pobj) {
+                return function() {
+                    pobj.mapping.map( elt => {
+                        mapFunction(elt.param, elt.field).apply(null, arguments);                    
+                    });
+                };
+            }
+            if (self.slots.indexOf(slotName) < 0) {
+                self.slots.push(slotName);
+                self[slotName] = slotFunction(p);                
+            }
+        };
+        
+    }, [], []
+);
+
+export default {UIMapper : UIMapper};