Cleaned up some code in the general section. Used the ** marker for bolding the questions. Added a internal ref to the installation doc so we could use best-practice referencing. Added som stuff to FAQ/configuration.

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@4786 d4fa192b-c00b-0410-8231-f00ffab90ce4