CN-1733 fix: 1、修复Entity Setting页面的mapping和relation被删空能被上传的问题；2、添加source列表上传文件按设置的格式上传。

src/views/setting/sources/SourcesForm.vue

@@ -327,7 +327,7 @@ export default {
         this.sourceObj.fields = JSON.stringify(this.sourceObj.fieldsData.data)
         this.sourceObj.lookups = JSON.stringify(this.sourceObj.lookupsData.data)
         if (this.sourceObj.fieldsData.data.length === 0 && this.sourceObj.lookupsData.data.length === 0) {
-          ElMessageBox.alert(`${this.$t('detection.create.informationFilled')}`, this.$t('overall.tip'), {
+          ElMessageBox.alert(this.$t('detection.create.informationFilled'), this.$t('overall.tip'), {
             confirmButtonText: 'OK',
             callback: () => {}
           })