积分统计，积分兑换，添加负号

src/views/modules/points/points-statistics.vue

@@ -39,10 +39,11 @@
                          label="积分类别"
                          header-align="center"
                          align="center"></el-table-column>
-        <el-table-column prop="allPoints"
-                         label="总积分"
-                         header-align="center"
-                         align="center"></el-table-column>
+        <el-table-column prop="allPoints" label="总积分" header-align="center" align="center">
+          <template slot-scope="scope">
+            {{scope.row.operationDesc === '积分兑换' ? '-'+scope.row.residuePoints : scope.row.allPoints}}
+          </template>
+        </el-table-column>
       </el-table>
       <el-pagination :current-page="page"
                      :page-sizes="[10, 20, 50, 100]"