web和pda入仓和添加新品名，“材质”非必填，可以为空，选中后可以删除所选

http://zentao.jdshangmen.com/bug-view-1441.html

src/views/ecw/order/warehousing/components/editDialog.vue

@@ -57,7 +57,7 @@
               </el-descriptions-item>
             </el-descriptions>
             <el-form-item label="材质" style="margin-top: 20px">
-              <dict-selector :type="DICT_TYPE.ECW_PRODUCT_MATERIAL" v-model="form.material"></dict-selector>
+              <dict-selector :type="DICT_TYPE.ECW_PRODUCT_MATERIAL" v-model="form.material" clearable></dict-selector>
             </el-form-item>
             <el-form-item label="入仓时间" v-if="!edit">
               <el-date-picker v-model="form.inTime" type="datetime" placeholder="请选择入仓时间" value-format="yyyy-MM-dd HH:mm:ss"></el-date-picker>