[gh-697] Have unl_url_get_contents prevent pages from being cached for longer than the retrieved data. @1h00
[gh-707] Add diff module as a submodule. @0h15
[gh-709] Add a sample sites/all/settings.php file. @0h15
[gh-697] If varnish is being used for a SSI filtered request, use an ESI instead of doing the include in drupal. @4h00
Merge pull request #713 from tsteiner2/issue-709

Closes #709
Merge pull request #712 from tsteiner2/issue-707

Closes #707
Merge pull request #714 from tsteiner2/issue-697

Closes #697
[gh-697] Disable automatic port detection because production uses 8080 behind varnish, which breaks includes.