fix tooltip display to show the date, rather than the day of the week.

updated minified version.
#70

DataCenter_Windows/WindowsDataCenter/WindowsDataCenter/www/spa.js

@@ -163,7 +163,7 @@
     }
     self.convertToDisplayDateTime = function (dateValue) {
         var date = new Date(dateValue); // dd MM YY HH:mm:ss e.g.: 01 Mar 17 17:34:02
-        return date.getDay() + " "
+        return date.getDate() + " "
             + date.toLocaleString("en-us", { month: "long" }) + " "
             + (date.getYear()-100) + "  "
             + self.padNumber(date.getHours()) + ":"