more tracking; hide arb from welcome splash

src/components/chart/LimitBuilder.vue

@@ -37,7 +37,10 @@
       </tr>
       </tbody>
     </table>
-    <one-time-hint name="click-chart" activator="#tv-widget" location="center" :when="priceA===null" text="Click the chart!"/>
+    <one-time-hint name="click-chart" activator="#tv-widget" location="center"
+                   :when="priceA===null" text="Click the chart!"
+                   :on-complete="()=>track('click-chart')"
+    />
   </rung-builder>
 </template>
 
@@ -50,6 +53,7 @@ import RungBuilder from "@/components/chart/RungBuilder.vue";
 import {computed, ref} from "vue";
 import {allocationText, HLine} from "@/charts/shape.js";
 import OneTimeHint from "@/components/OneTimeHint.vue";
+import {track} from "@/track.js";
 
 const s = useStore()
 const os = useOrderStore()