Change the paths stored on the database

The paths in the database now are relative of the config BOOKS_PATH and COVER_PATH

For updating the database this query should be use:
for (var i = db.books.find(); i.hasNext(); ) {
        var book = i.next();
        db.books.update({_id: book["_id"]}, {$set: {path: book["path"].slice(6), cover: book["cover"].slice(7), coversmall: book["coversmall"].slice(7)}});
}

upload.go

@@ -43,7 +43,7 @@ func uploadHandler(w http.ResponseWriter, r *http.Request) {
 		for _, path := range paths {
 			title, err := ParseFile(path)
 			if err != nil {
-				os.Remove(path)
+				os.Remove(NEW_PATH + path)
 				sess.Notify("Problem uploading!", "The file '"+path[len("new/"):]+"' is not a well formed epub", "error")
 			} else {
 				uploaded = uploaded + " '" + title + "'"