Merge pull request #5281 from GotenXiao/pagination-active-background

Use paginationActiveBackground var to finish fixing #4295

less/pagination.less

@@ -34,7 +34,7 @@
 .pagination ul > li > a:hover,
 .pagination ul > .active > a,
 .pagination ul > .active > span {
-  background-color: #f5f5f5;
+  background-color: @paginationActiveBackground;
 }
 .pagination ul > .active > a,
 .pagination ul > .active > span {