title: Bokeh DataTable datetimeformatter
body: <p>I am calling a function to create DataTable - the problem is Date field has both Date and Time in the same column and is not getting displayed properly.I will prefer to keep the field Date + Time values intact - however can separate it into two different fields of Data and Time if its not possible.</p>
  
  <pre><code>def make_table(source):
  columns = [
      TableColumn(field='DATE', title="DATE", formatter=DateFormatter()),
      TableColumn(field='CCYPAIR', title="CCYPAIR"),
      TableColumn(field='SIDE', title="SIDE"),
      TableColumn(field='PRICE', title="PRICE"),
      TableColumn(field='TYPE', title="TYPE"),
      TableColumn(field='Volume', title="Amount"),
      TableColumn(field='ORDER_ID_108', title="ORDERID"),
   ]
  data_table = DataTable(source=source, columns=columns, width=1000, height=400)
  return data_table
  </code></pre>
  
  <p>CCYPAIR                    DATE ORDER_ID_108   PRICE SIDE   TYPE    Volume</p>
  
  <p>0  EURCHF 2015-01-15 13:41:34.555      380      1.2    B  ORDER      50.0</p>