角色增加权限弹出框，保存按钮放右，与系统其它地方保持一致

report-ui/src/views/accessRole/components/RoleAuthority.vue

@@ -26,8 +26,8 @@
       class="el-tree"
     />
     <div slot="footer" style="text-align: center">
-      <el-button type="primary" plain @click="saveTreeData">保存</el-button>
       <el-button type="danger" plain @click="closeDialog">取消</el-button>
+      <el-button type="primary" plain @click="saveTreeData">保存</el-button>
     </div>
   </el-dialog>
 </template>