BulmaButton icon optional

ui/src/components/BulmaButton.vue

@@ -1,7 +1,7 @@
 <template>
   <button class="button">
     <span class="icon-text">
-      <span class="icon">
+      <span v-if="icon !== undefined" class="icon">
         <font-awesome-icon :icon="icon" />
       </span>
       <span><slot name="default" /></span>
@@ -14,11 +14,14 @@ import { Options, Vue } from "vue-class-component";
 
 @Options({
   props: {
-    icon: String,
+    icon: {
+      type: String,
+      required: false,
+    },
   },
 })
 export default class extends Vue {
-  public icon!: string;
+  public icon?: string;
 }
 </script>
 

ui/src/components/DoorMapEditor.vue

@@ -8,11 +8,7 @@
     <DoorChooser v-if="current_step === 1" v-model:doors="doors" />
     <template v-if="current_step === 2">
       <Calendar :doors="doors" />
-      <BulmaButton
-        class="is-success"
-        icon="fa-solid fa-crosshairs"
-        @click.left="load_doors"
-      >
+      <BulmaButton class="is-success" @click.left="load_doors">
         Laden
       </BulmaButton>
       <BulmaButton