changed: Cosmetics
fixed: We should only try to extract/show thumbs/flags for file-like items (fixes #14176)
fixed: The check for determining whether we're done was wrong
fixed: Auto flags didn't work for items without a VideoInfoTag
changed: Improve logic in GetStreamDetails() for items without a (complete) VideoInfoTag
fixed: Setting streamdetails for auto thumbs/flags didn't work for items with incomplete/empty infotags
fixed: Make sure item has a VideoInfoTag before accessing it
upnp: missing playlist & musicvideo nodes for music library
upnp: smartplaylists had incorrect upnp:class
upnp: fixed missing fanart and thumbs for playlist items. fixes #13945
Add isvideo info for slideshow window.
[musicdb] cosmetic: remove CSongMap and just use an std::map instead
[musicdb] cosmetic: make the path / filename index unique
Merge pull request #2565 from ulion/add_slideshow_isvideo_info

Add isvideo info for slideshow window.
videodb: use strings instead of numbers in videodb:// URL
CUPnPServer: fix bad videodb:// URL
musicdb: use strings instead of numbers in musicdb:// URL
videodb: add Filter parameter to GetSetsNav()
smartplaylists: add <group> to group the results on a higher level (e.g. genre, studio, director, ...)
CSmartPlaylistDirectory: add support for grouping to video smartplaylists