Miro 4.0.4

* New features
- (Windows) Easy Install on windows should detect location of previous install
* Bug fixes
- (all) KeyError during item delete
- (Linux) Miro fails to start with libavformat 0.8.0 due to compiler errors
- (all) Better detect whether an item is podcast or not and populate the field (affects Miro Mobile)
- (all) Drag and drop can reorder items
- (all) Implement podcast view for shares
- (all) Scroll position can reset
- (all) UnicodeDecodeError when trying to plug in external disk
- (all) client side data not always updated when items edited on server
- (all) straighten out podcast sharing behavior
- (all) tighten up error handling when remote share gets yanked
- (all) CantPlayWidget should not show reveal file or open externally for remote (shared) items
- (all) While handling idle (result callback (Sharing Client ubuntu @ (jed.local., 3689)))
- (all) cheap sharing performance upgrades that we should do
- (all) UnicodeDecodeError while plugging in iPod
- (OS X) upgrade to perian 1.2.3
- (all) transcode sink should not bail out prematurely
- (all) transcode cleanup handler not always invoked