Merge pull request #1156 from dataease/pr@dev@refactor_icon

frontend/src/views/dataset/data/FieldEdit.vue

@@ -14,8 +14,8 @@
     <el-row>
       <el-form :inline="true">
         <el-form-item class="form-item">
-          <el-button v-if="hasDataPermission('manage',param.privileges)" size="mini" @click="addCalcField">{{ $t('dataset.add_calc_field') }}</el-button>
-          <el-button v-if="hasDataPermission('manage',param.privileges) && table.type !== 'excel' && table.type !== 'custom'" size="mini" :loading="isSyncField" @click="syncField">{{ $t('dataset.sync_field') }}</el-button>
+          <el-button v-if="hasDataPermission('manage',param.privileges)" size="mini" icon="el-icon-circle-plus-outline" @click="addCalcField">{{ $t('dataset.add_calc_field') }}</el-button>
+          <el-button v-if="hasDataPermission('manage',param.privileges) && table.type !== 'excel' && table.type !== 'custom'" size="mini" :loading="isSyncField" icon="el-icon-refresh-left" @click="syncField">{{ $t('dataset.sync_field') }}</el-button>
         </el-form-item>
         <el-form-item class="form-item" style="float: right;margin-right: 0;">
           <el-input

frontend/src/views/dataset/data/UnionView.vue

 <template>
   <el-row>
-    <el-button v-if="hasDataPermission('manage',param.privileges)" size="mini" @click="showUnionEdit">{{ $t('dataset.add_union') }}</el-button>
+    <el-button v-if="hasDataPermission('manage',param.privileges)" size="mini" icon="el-icon-circle-plus-outline" @click="showUnionEdit">{{ $t('dataset.add_union') }}</el-button>
     <el-row>
       <el-table
         size="mini"