title: How to reload extjs stores?
body: <p>I have 3 different stores (in 3 tabs) which shares the data with only one field is changed. When I click a button of an item on the first store's tab, I want that item to be listed in second store's tab and deleted from the first one. My current (and probably dummy) solution is to use Store.loadData() for each store on each button click event. But when the stores become huge (e.g. thousands or even millions of items), then this wouldn't be a practical solution I believe.</p>
  
  <p>So my question is that, is there any way to reload this kind of stores (which shares data with some unique-for-store fields) when non-shared fields are changed?</p>