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
Fix minor OSDseekframe pixelation issue
Fix OSD_nameNF pixelation, centering and size

Fix alignment in all elements to center
Fix outer ring diameter across all images
Fix pixelation and half pixels

This is the big one, because it unifies:

All texture elements to common and easily reproducible effect
and style.

Because: All previous had at least 4 different people
who had no access to the psd or sources yet new gfx were added onto.
Fix OSD_nameFO pixelation, centering and size

Fix alignment in all elements to center
Fix outer ring diameter across all images
Fix pixelation and half pixels
Color matching.

This is the big one, because it unifies:

All texture elements to common and easily reproducible effect
and style.

Because: All previous had at least 4 different people
who had no access to the psd or sources yet new gfx were added onto.
Fix CenteRating/rating# rogue pixels

Also improves file size considerably.