UI patches (#905)

- Show 0 clients when NT server props are undefined
- Add Prettier 

---------

Co-authored-by: Matthew Morley <matthew.morley.ca@gmail.com>

photon-client/src/components/settings/LEDControlCard.vue

@@ -4,11 +4,7 @@ import { useSettingsStore } from "@/stores/settings/GeneralSettingsStore";
 </script>
 
 <template>
-  <v-card
-    dark
-    class="mb-3 pr-6 pb-3"
-    style="background-color: #006492;"
-  >
+  <v-card dark class="mb-3 pr-6 pb-3" style="background-color: #006492">
     <v-card-title>LED Control</v-card-title>
     <div class="ml-5">
       <cv-slider
@@ -18,7 +14,7 @@ import { useSettingsStore } from "@/stores/settings/GeneralSettingsStore";
         :slider-cols="12"
         :min="0"
         :max="100"
-        @input="args => useSettingsStore().changeLEDBrightness(args)"
+        @input="(args) => useSettingsStore().changeLEDBrightness(args)"
       />
     </div>
   </v-card>