feat: performance optimization.

src/components/FooterToolbar/FooterToolBar.vue

@@ -23,8 +23,4 @@ export default {
     }
   }
 }
-</script>
-
-<style lang="less" scoped>
-
-</style>
+</script>

src/views/system/components/BackupDrawer.vue

@@ -144,8 +144,12 @@ export default {
       default: true
     }
   },
-  created() {
-    this.getBackups()
+  watch: {
+    visible: function(newValue, oldValue) {
+      if (newValue) {
+        this.getBackups()
+      }
+    }
   },
   methods: {
     getBackups() {