1.8/develop

The commit I would like to merge is b733b99, Reorganized the environments page to flow better. And added details...

I would like to merge a single commit but I'm not sure how. All the other commits from November have not been completed. Looks like I should have create a separate branch for those commits, but I didn't and now they are part of my develop branch. 



environment variables are present in every operating system, see http://en.wikipedia.org/wiki/Environment_variable. 

There are dozens of ways to set an environment variable, and one of them is via apache's mod_env module, that introduces the SetEnv command.