[CS Revisions] Part 1 of 2 - Converting to 'AppBundle'

This changes all namespace instances
[CS Revisions] Fix tabs in this file as well as change namespace to 'AppBundle'
[CS Revisions] Part 2 of 2 - Move to AppBundle directory

Move files from src/Phpbb/WebsiteInterfaceBundle/ to the src/AppBundle/ directory
[CS Revisions] Part 3 of 3 - Move to AppBundle

I also needed to adapt those locations that use the shortcut syntax
[CS Revisions] Part 4 of 4 - Move to AppBundle

Finally rename the base bundle class
[CS Revisions] Change the phpunit.xml.dist so it supports non-vendor namespaced bundles in src/
[CS Revisions] Rename DI Extension
Merge pull request #45 from michaelcullum/task/cs-revisions/AppBundle

AppBundle