Automattic/jetpack — pull request #147 by kovshenin (2014-01-29 18:36:36+00:00)
Title: Don't load module-extras.php if Jetpack is not active

If Jetpack is not active and not in development mode, we don't really need module-extras.php, otherwise some things (like Featured Content) still work despite Jetpack not being connected to WordPress.com, which may not be the desired behavior. This was broken in 5761feaae0adb66fca66cc64080553d60b3852b7.