[bookmark] fix resume bookmark from a plugin:// of stack:// items, thanks to kit500
new icons for media folder
[webinterface] new favicon
[osx] new icons + create icon from the iconset
[upnp] make use of new icons and add additional sizes
[linux] make use of new icons

Conflicts:
	xbmc/windowing/X11/WinSystemX11.cpp
[droid] new launcher icons + fetch launcher icons from media dir
[cydia] - remote iconpack script - iconpack is not needed anymore - http://mirrors.xbmc.org/apt/pre-release/ios/CydiaIcon.png is used for it - should be replaced with media/iOS/rounded/AppIcon57x57.png
[ios] added new iOS icons
[ios] - announce new icons in the info.plist
[ios/atv2] - removed unused XBMC.png and moved the ATV2 images to tools/darwin/packaging/media/atv2
[atv2/packaging] - ensure to overwrite our icon in the cache for make it appear
[ios/atv2] - sync project for new icons - add the media folder to xcode
[win32] new icon
[win32] new installer artwork
Merge pull request #4609 from da-anda/new-icons

New icons and artwork
videoplayer: adapt lateness detection and dropping to buffering
video player: present correct pts to user for a/v sync (after buffering in renderer)
videoplayer: some rework and documentation
renderer: bump buffers to 5