Added the 'stacked' and 'lowestCurrent' functions

src/app/services/graphite/gfunc.js

@@ -76,6 +76,13 @@ function (_) {
     defaultParams: ['', '']
   });
 
+  addFuncDef({
+    name: "stacked",
+    category: categories.Special,
+    params: [ { name: "stack", type: 'string' } ],
+    defaultParams: ['stacked']
+  });
+
   addFuncDef({
     name: "groupByNode",
     category: categories.Special,
@@ -213,6 +220,13 @@ function (_) {
     defaultParams: [5]
   });
 
+  addFuncDef({
+    name: 'lowestCurrent',
+    category: categories.Filter,
+    params: [ { name: "count", type: "int" } ],
+    defaultParams: [5] 
+  }); 
+
   addFuncDef({
     name: 'movingAverage',
     category: categories.Filter,