group by browser type; no version changes
stop referring to VISTA. That actually gets mapped to "Windows 7" ("Windows 2008").
use the saucelabs documented platforms for Linux, Mac, and XP. None of the actual userAgent and OS have changed up to this commit
s/VISTA/Windows 2008/ here for consistency
Merge pull request #3072 from jrgm/cleanup_sauce_platforms

Cleanup config/sauce-platorms.js to use documented names, in prep for upgrading browser version numbers