title: Save / restore searched values in DataTables
body: <p>I am using data tables with multiple search boxes, and stateSave enabled. The table will indeed save the state, but when reloading the table, the search boxes do not save.</p>
  
  <p>For example, I have 3 columns... Book Author, Book Title, and Book ISBN. I have a search box for each column for greater searching power. If I search for "Mark" in author, all results with the name Mark in the author appear, as expected. Refreshing the page, or doing any other action which will force the table to reload (such as adding a book), the saved search results appear, but the search box is blank. To get all the items to reappear, I need to go to the book author search box and press backspace.</p>
  
  <p>So... how can I save the state of the searchByAuthor text box?</p>
  
  <p>Or... how can I get the value that was searched for, and what column it was used on? If I can get that, I can repopulate the correct search box.</p>