Refresh /background settings.jpg

This is image by me, the mesh is based on a stock image, the rest is
100% homegrown.

See http://forum.xbmc.org/showthread.php?tid=183508
Fix calibrations images pixelelation issues
Fix icon_imagename pixelation issues
OSDseekframe pixelation fixes
Fix OSD_nameNF pixelation, centering and size

Fix alignment in all elements to center
Fix out ring sizes across all images
Fix pixelation and half pixels
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