Web UI: Fix torrent deletion from IE

Changelog

@@ -10,6 +10,7 @@
     - BUGFIX: Save RSS items to disk regularly for safety
     - BUGFIX: Fix ratio calculation (use all_time_download)
     - BUGFIX: Fix torrent upload issues (Web UI)
+    - BUGFIX: Fix some IE incompatibilities (Web UI)
     - COSMETIC: Display speed at the beginning of the Window title
     - COSMETIC: Several cosmetic fixes to the Web UI
     - COSMETIC: Make top toolbar follow system style

src/webui/html/confirmdeletion.html

@@ -35,7 +35,7 @@
 	    }
 	}
 
-	var hashes = JSON.decode($get('hashes'));
+	var hashes = $get('hashes').split(',');
 
 window.addEvent('domready', function(){
         $('cancelBtn').focus();

src/webui/scripts/mocha-init.js

@@ -160,7 +160,7 @@ initializeWindows = function(){
 				id: 'confirmDeletionPage',
 				title: "_(Deletion confirmation - qBittorrent)",
 				loadMethod: 'iframe',
-				contentURL:'confirmdeletion.html?hashes='+JSON.encode(h),
+				contentURL:'confirmdeletion.html?hashes='+h.join(','),
 				scrollbars: false,
 				resizable: false,
 				maximizable: false,