Reset the offset value when changing the page size (Bug 1053708)

in the paginator

Change-Id: I362704b27761c334be712a32f3b3e5f73c3b3b37
Signed-off-by: Son Nguyen <son.nguyen@catalyst.net.nz>

htdocs/js/paginator.js

@@ -77,7 +77,11 @@ var Paginator = function(id, datatable, script, extradata) {
                     url += "?";
                 }
                 url += setlimitselect.name + "=" + setlimitselect.value;
-                url += "&" + currentoffset.name + "=" + currentoffset.value;
+                var offsetvalue = currentoffset.value;
+                if ((offsetvalue % setlimitselect.value) !== 0) {
+                    offsetvalue = Math.floor(offsetvalue / setlimitselect.value) * setlimitselect.value;
+                }
+                url += "&" + currentoffset.name + "=" + offsetvalue;
                 location.assign(url);
             });
         }