Revize 6842a0b0

Re #8928 - Oprava chyb vzniklých v průběhu iterace

• change graphloader calling
• fix tooltip for negative values

src/vega/body/linechart.json

@@ -154 +154 @@
                   },
                   "y2": {
                     "scale": "yDetail",
-                    "value": 0
+                    "signal": "-1e+36"
                   },
                   "fill": {
                     "value": "#00ff00"
@@ -239 +239 @@
                   },
                   "y": {
                     "scale": "yDetail",
-                    "value": 1000000
+                    "band": 1
                   },
                   "y2": {
                     "scale": "yDetail",
-                    "value": -1000000
+                    "signal": "-1e+36"
                   },
                   "strokeOpacity": [
                     {