We talk about a "proper installation" occasionally... and assume folks know

how to set the perms on the serverroot.  But I don't think we document it
anywhere.  Nowhere that's easily found direct from the "how to install"
page.  Document it better, link to it.  Remove the install_1_1 docs.
Update a 1.2 reference to 1.3.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@79686 13f79535-47bb-0310-9956-ffa450edef68