graflow: rehresh event to fix movenodes

graflow_examples/flows/testFlow1.json

@@ -0,0 +1,50 @@
+{
+    "nodesFile": "/app/thirdparty/buildoz/graflow_examples/nodesLib/nodesTest1.html",
+    "flow": {
+        "nodes":[
+            {   "nodeType": "inc",
+                "id": "aze",
+                "coords": { "x": 220, "y": 120}
+            },
+            {   "nodeType": "inc",
+                "id": "aze2",
+                "coords": { "x": 220, "y": 10}
+            },
+            {   "nodeType": "factor",
+                "id": "qsd",
+                "coords": { "x": 470, "y": 170}
+            }, 
+            {   "nodeType": "factor",
+                "id": "qsd2",
+                "coords": { "x": 470, "y": 50}
+            },           
+            {   "nodeType": "wadder",
+                "id": "wcx",
+                "coords": { "x": 720, "y": 50}
+            },
+            {   "nodeType": "multiplier",
+                "id": "ert",
+                "coords": { "x": 550, "y": 350}
+            },
+            {   "nodeType": "input",
+                "id": "0000",
+                "coords": { "x": 20, "y": 350}
+            },
+            {   "nodeType": "console",
+                "id": "9999",
+                "coords": { "x": 800, "y": 350}
+            }
+        ],
+        "links": [
+            { "from": ["0000", "out1"], "to": ["aze", "inp1"] },
+            { "from": ["aze2", "out1"], "to": ["qsd2", "inp1"] },
+            { "from": ["aze", "out1"], "to": ["qsd", "inp1"] },
+            { "from": ["qsd2", "out1"], "to": ["ert", "inp2"] },
+            { "from": ["0000", "out1"], "to": ["aze2", "inp1"] },
+            { "from": ["qsd2", "out1"], "to": ["wcx", "inp2"] },
+            { "from": ["wcx", "out1"], "to": ["ert", "inp1"] },
+            { "from": ["qsd", "out1"], "to": ["wcx", "inp1"] },
+            { "from": ["ert", "out1"], "to": ["9999", "inp1"] }
+        ]
+    }
+}