initial upload of new Javascript Frontend based on ExtJS (by Johannes)

- contains ExtJS Library 4.1.1a, together with css and images
  - is related to the module 93_DbLog.pm, which holds some functions used by the frontend

git-svn-id: https://fhem.svn.sourceforge.net/svnroot/fhem/trunk/fhem@2767 2b470e98-0d58-463d-a4d8-8e2adae1ed80

www/frontend/app/store/ReadingsStore.js

@@ -0,0 +1,18 @@
+/**
+ * Store for the Readings
+ */
+Ext.define('FHEM.store.ReadingsStore', {
+    extend: 'Ext.data.Store',
+    model: 'FHEM.model.ReadingsModel',
+    proxy: {
+        type: 'ajax',
+        method: 'POST',
+        url: '', //gets set by controller after device has been selected
+        reader: {
+            type: 'json',
+            root: 'data',
+            totalProperty: 'totalCount'
+        }
+    },
+    autoLoad: false
+});