Simpler additions to mirror files, less confusing links

[jrddunbr]

For the distributions we mirror, we should replace the links on the distribution page with instructions for each distro on how to set us as the mirror. We should do this because people erroneously copy the link under the ISO, thinking that is what they need to add to their mirror list files.

The links are also pointless, because nobody can tell what the proper URL is to set the distro up. For example, with Arch Linux, you would need to add the following to /etc/pacman.d/mirrorlist
http://mirror.clarkson.edu/archlinux/$repo/os/$arch
but instead, the page only lists the HTTP url as the following:
http://mirror.clarkson.edu/archlinux/
which is not useful at all, and completely incorrect to put into your mirrorlist file. Also important to note is that some people don't put it as $repo/os/$arch, instead they do $arch/os/$repo or other combinations.

[lannonbr]

Possible implementation to reference: https://oss.lzu.edu.cn/wiki/mirror/help

[lannonbr]

As of yesterday I've started working on this. So far Arch and Debian have setup sections for using our mirror

[jrddunbr]

Ubuntu has that new installer which may make it less obvious how to configure it on installation. May want to look into this again.