[Tracker] website updates

["Michael Biebl" <mbiebl gmail com>]

Hi everyone,

spotted some errors on the website and some outdated information:

1.) Getting Started page:
 - The Debian packages are now available from the official unstable
(a.k.a sid) archive for all supported architectures.
   see also: http://packages.debian.org/unstable/utils/tracker
   (note: this page is currently not up yet, but will be by 24h)
 - Ubuntu Feisty: It's not x86 only but all supported architectures for feisty.
   see also: http://packages.ubuntu.com/feisty/utils/tracker
 - The log file is ~/.Tracker/tracker.log (not logfile)

2.) Download page:
 - Small typo s/Startted/Started/

Cheers,
Michael