Wrong hashrate calculation

Hashes are not bytes:
> 1 byte = 8 bits
> 1 kilobyte = 1024 bytes

Hashes are the units, and so therefore - as `k`,  `m` only mean *10^3 and *10^6
> 1 hash = 1 hash
> 1 kh     = 1000 hashes

libs/stats.js

@@ -274,9 +274,9 @@ module.exports = function(logger, portalConfig, poolConfigs){
         var i = -1;
         var byteUnits = [ ' KH', ' MH', ' GH', ' TH', ' PH' ];
         do {
-            hashrate = hashrate / 1024;
+            hashrate = hashrate / 1000;
 			i++;
-        } while (hashrate > 1024);
+        } while (hashrate > 1000);
         return hashrate.toFixed(2) + byteUnits[i];
     };