Update sysvinit SITE_HOME, mute thin, etc

- Use $NAME in $SITE_HOME for future daemon name change
- Mute thin output
- Return true from daemon commands
Convert sysvinit-example to ugly
Let ugly generate the full path to the app

Usage of the  $vhost_dir and $vcspath is enough to get the full
path to the app without making the assumption that the app is in
a directory named ‘alaveteli’
Update thin sysvinit descriptions

Replace "web server" with the slightly more correct "app server"