added getDataSet to network manipulation edge add and edit functions to match existing remove and node equivalents

lib/network/modules/ManipulationSystem.js

@@ -1085,7 +1085,7 @@ class ManipulationSystem {
       if (this.options.addEdge.length === 2) {
         this.options.addEdge(defaultData, (finalizedData) => {
           if (finalizedData !== null && finalizedData !== undefined && this.inMode === 'addEdge') { // if for whatever reason the mode has changes (due to dataset change) disregard the callback
-            this.body.data.edges.add(finalizedData);
+            this.body.data.edges.getDataSet().add(finalizedData);
             this.selectionHandler.unselectAll();
             this.showManipulatorToolbar();
           }
@@ -1096,7 +1096,7 @@ class ManipulationSystem {
       }
     }
     else {
-      this.body.data.edges.add(defaultData);
+      this.body.data.edges.getDataSet().add(defaultData);
       this.selectionHandler.unselectAll();
       this.showManipulatorToolbar();
     }
@@ -1117,7 +1117,7 @@ class ManipulationSystem {
             this.body.emitter.emit('_redraw');
           }
           else {
-            this.body.data.edges.update(finalizedData);
+            this.body.data.edges.getDataSet().update(finalizedData);
             this.selectionHandler.unselectAll();
             this.showManipulatorToolbar();
           }
@@ -1128,7 +1128,7 @@ class ManipulationSystem {
       }
     }
     else {
-      this.body.data.edges.update(defaultData);
+      this.body.data.edges.getDataSet().update(defaultData);
       this.selectionHandler.unselectAll();
       this.showManipulatorToolbar();
     }