New sorting method: Random

Signed-off-by: Eduardo Lima (Etrunko) <eblima@gmail.com>
Randomize Playlist entries too

Signed-off-by: Eduardo Lima (Etrunko) <eblima@gmail.com>
Merge pull request #121 from etrunko/random

Add new sorting method: Random
Updated MPlayer to MPlayer-SB53.
See http://www.spirton.com/mplayer-mencoder-subjunk-build/ for changelog.
Update CHANGELOG.txt

Added note for random sorting option
Updated FFmpeg for Windows to latest Zeranoe FFmpeg build.
Updated binary versions and build scripts
Using “Arial Unicode.ttf” as default font on OS X Mavericks.
Fixed subtitle args handling to correctly handle spaces in font names.
Updated Spanish translation (thanks, ugo-h!)
Fixes for Spanish translation (thanks, ugo-h!)
Improved matching algorithm to avoid unneccesary transcoding (thanks, Liboicl!)
Closes #124.
Sort renderers by name in GUI General Configuration -> Default renderer combo box