Graphite: Fix for nonNegativeDerivative function, now possible to not include optional first parameter maxValue, Closes #702

src/app/directives/graphiteFuncEditor.js

@@ -147,7 +147,7 @@ function (angular, _, $) {
             $funcLink.appendTo(elem);
 
             _.each(funcDef.params, function(param, index) {
-              if (param.optional && !func.params[index]) {
+              if (param.optional && func.params.length !== index + 1) {
                 return;
               }
 
@@ -239,4 +239,4 @@ function (angular, _, $) {
 
     });
 
-});
+});

src/app/services/dashboard/dashboardViewStateSrv.js

@@ -21,10 +21,6 @@ function (angular, _, $) {
         }
       };
 
-      $scope.onAppEvent('dashboard-saved', function() {
-        self.update({ fullscreen: false });
-      });
-
       $scope.onAppEvent('$routeUpdate', function() {
         var urlState = self.getQueryStringState();
         if (self.needsSync(urlState)) {

src/app/services/graphite/gfunc.js

@@ -280,8 +280,8 @@ function (_) {
   addFuncDef({
     name: 'nonNegativeDerivative',
     category: categories.Transform,
-    params: [{ name: "max value or 0", type: "int", }],
-    defaultParams: [0]
+    params: [{ name: "max value or 0", type: "int", optional: true }],
+    defaultParams: ['']
   });
 
   addFuncDef({