Revize c1664074

Re #8914 - Opravit zobrazení grafů pro endpoint analytics

• analytics working for sensor charts
• analytics for unit charts trigger dummy multiline analytics chart

src/vega/body/linechart.json

@@ -83 +83 @@
   ],
 
   "signals": [
+    {},
+    {},
     {},
     {
       "name": "tooltipSignal",
@@ -167 +169 @@
               "type": "symbol",
               "from": {"data":"lookup"},
               "encode": {
-                "enter": {
-                  "tooltip": {
-                    "signal": "{title: timeFormat(datum.dateTime, '%A, %e. %B %Y, %X') }"
-                  }},
                 "update": {
                   "shape": {"value": "circle"},
                   "size": {"value": 30},
@@ -234 +232 @@
               "interactive": false,
               "zindex": 20,
               "encode": {
-                "enter": {
-                },
                 "update": {
                   "x": {
                     "scale": "xDetail",
@@ -243 +239 @@
                   },
                   "y": {
                     "scale": "yDetail",
-                    "band": 1
+                    "value": 1000000
                   },
                   "y2": {
                     "scale": "yDetail",
-                    "value": 0
+                    "value": -1000000
                   },
                   "strokeOpacity": [
                     {