Revert "fixed issue with precision, now using m instead of ms as per influxdata/influxdb#636"

This reverts commit bf2a387.

Author: bernd

lib/influxdb.js

@@ -344,7 +344,7 @@ InfluxdbBackend.prototype.httpPOST = function (points) {
   if (!points.length) { return; }
 
   var self = this,
-      query = {u: self.user, p: self.pass, time_precision: 'm'},
+      query = {u: self.user, p: self.pass, time_precision: 'ms'},
       protocolName = self.protocol == http ? 'HTTP' : 'HTTPS';
 
   self.logDebug(function () {