Fix spotIcon classes on change

src/components/spotIcon.vue

@@ -6,9 +6,9 @@ export default {
 		margin: Boolean,
 		classes: String
 	},
-	data() {
-		return {
-			classNames: 'fa fa-'+this.icon+((this.margin || this.text && this.text!='')?' push':'')+(this.classes?' '+this.classes:'')
+	computed: {
+		classNames() {
+			return 'fa fa-'+this.icon+((this.margin || this.text && this.text!='')?' push':'')+(this.classes?' '+this.classes:'')
 		}
 	}
 }