title: Extjs 4 newline character in column header text
body: <p>In my grid columns header/text are very long and I want to display it in 2-3 line, depends on requirement. Customer will put all this entry in a file with "\n" as new line character.</p>
  
  <p>How to implment it in Extjs 4.1???</p>
  
  <p>Note : 'br/>' works fine but all files created by end user with "\n" not with 'br>'.</p>
  
  <p>Thanks.</p>