also the /etc/monit directory is not really needed

- Worked through the documentation, removed duplicated documentation.
- Fixed some notifications/relations they way they make more sense.

So we clean up any unmanaged resource. If this behavior should
be optional, we should introduce a parameter for the monit class.

Instead of using global variables.

add some additional variables, such as the monit_mailserver

through setting the variable $monit_enable_httpd to either 'yes', or 'no'

The default is to set it to 'no', which keeps the httpd server from
being started

be set with monit::snippet lines if necessary