Make help pages use latest online version wherever possible

[xmacan]

If forum is very often query about mysql poplate timezone, ...
There could be link (or more links) to official documentation
https://docs.cacti.net/Install-Under-CentOS_LAMP.md

[TheWitness]

Good idea!

[netniV]

This should use a client side check to see if the remote site is available. If so, go there, otherwise, use the local if it's available (which can be determined server side).

[TheWitness]

Yea, I've made that change. I'm pretty sure it's solid enough. Take a look at the commit.