created and tested server side water control

app/client/log.js

@@ -0,0 +1,21 @@
+Template.log.helpers({
+  sensorDataCollection: function() {
+    return SensorData.find({}, {
+      sort: {
+        created_at: -1
+      }
+    });
+  }
+});
+
+Template.log.events({
+  'click clear_log': function() {
+    Meteor.call('clearLog');
+  }
+});
+
+Template.sensorData.helpers({
+  created_at_formatted: function() {
+    return moment(this.created_at).format("DD.MM.YYYY, HH:mm")
+  }
+});