[confluence] replace subtitle flag icons with new ones

As discussed in #3552, this replace the subtitle flag icons with new
32x32 pixel icons from https://www.gosquared.com/resources/flag-icons/

This also fixes some wrong flags like uk. It's Ukrainian not United
Kingdom.
[url] don't run ValidatePath() on hostnames where the protocol has an encoded hostname. fixes #14699
[dxva] fixup: anaglyph 3d
fix for #14713: RSSDirectory Reading of Boxee Genre Incorrect
[confluence] texture changes for epg timeline view
add RSS feeds from our addon website
[release] version bump to 13.0 alpha11 as we start new merge window
context menu: move "Remove from library" to "Manage..." sub menu
context menu: use string-based media type detection instead of VIDEO_DB_CONTENT_FOO
context menu: add Manage... sub-menu to movie sets
context-menu: add "Manage..." sub-menu to tags
CGUIDialogVideoInfo: add NULL-pointer and other sanity checks
context menu: move "Scan for new content" to the very bottom for tvshows (same as for video sources)
context menu: move "Play" to the top (for folders) as it should always be the first option
FIX: External Player support for Android. See: http://forum.xbmc.org/showthread.php?tid=175341
FIX: [stagefright] partial revert of 645010e ; causes "upside-down" videos
FIX: [droid] catch UnsatisfiedLinkErrors when invoking native
Merge pull request #3743 from koying/quickpr

[droid] Stagefright + java fixes
Merge pull request #3740 from koying/fixdroidextplayer

FIX: External Player support for Android. See: http://forum.xbmc.org/sho...
Merge pull request #3741 from MartijnKaijser/a11

[release] version bump to 13.0 alpha11 as we start new merge window