FS#2469 Indexer don't update index files when page is deleted

Backend

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  2012-03-14 YoBoY

  When a page is deleted, to update the index files (i*.idx, w*.idx, ...) the indexer call the idx_addPage function. This one test if a .indexed file exists and if yes test if the filemtine > false (page don't exist anymore). If I delete this .indexed file same problem, it tests if page don't exist and if both page and .indexed don't exist, it return also false.
  
  This tests makes the function return always false when a page is deleted without calling the deletePage function in charge of the update of the indexes.
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  2012-03-15 Michitux

  Fixed in a23ac4d7 and the following commits fix the actual deletion of the page from the index.