title: Date format and date parsing in Ext.Js4
body: <p>i'm reading some data to build a grid with ext.js4.1.3 It isn't difficult as long as i don't have to parse the date field of my json. It is formatted like this:</p>
  
  <pre><code>"2013-04-30 21:59:40"
  </code></pre>
  
  <p>So it should be the European way of writing the date with the time after.. But i don't have any idea of how to read it. My last approach is:</p>
  
  <p>in the Model:</p>
  
  <pre><code> fields: [
     {name: 'id'},
     {name: 'name',      type: 'string', convert: null,     defaultValue: undefined},
     {name: 'email',     type: 'string', convert: null,     defaultValue: undefined},
     {name: 'last_modified',      type: 'date',  dateFormat: 'n/j h:ia', defaultValue: undefined}
  ],
  </code></pre>
  
  <p>(and i think that this is the dateformat which is messing up everything)</p>
  
  <p>and in the Panel:</p>
  
  <pre><code>{
              text     : 'last_modified',
              width    : 85,
              sortable : true,
              renderer : Ext.util.Format.dateRenderer('d/m/Y'),
              dataIndex: 'last_modified'
          },
  </code></pre>
  
  <p>What am i missing? It is only a problem of recognizing the right dateformat? If i leave this configuration it recognizes the date field but doesn't display anything in it.As if the resulting field was undefined.Do you know if i should use an alternative dateformat at least in the model??</p>
  
  <p>Agnese</p>