Use fake tristate checkbox on IE < 9 only
Reduce font size of priority combo boxes

They were too big in some cases (e.g. Firefox on Linux).
Remove XML Encoding from HTML files
Restricts hacks and workarounds to IE < 9
Workaround to make invisible buttons clickable on IE
Bump Internet Explorer compatibility
Minor UI changes to upload window

Fix also the window auto-close when uploading torrent for some browsers.