Review Documentation

Hi Dave,

I had a chance to get my documentation up for the 4x branch: https://www.drupal.org/node/2340315

I really only got through connecting Drupal for Facebook and some of the FB applications concepts, so any additions are welcome.

Two tasks:

1. Review the documentation and add to it or revise it as needed
2. I created more descriptive versions of the modules descriptions. They appear at the end of the documentation node. I suggest replacing the module descriptions in the .info files with these and then removing them from the documentation. Yes, I was too lazy to make a patch. :)