Revert "Revert "Removing legacy promotion path""

This reverts commit 441089b009cf6055a3dc64ea34a9ea589c8f12fe. This is to
re-remove the legacy promotion path.
Content views: Updating activation key and system options

Updating content view options for activation keys and systems.
Merge pull request #24 from daviddavis/temp_1368464599

Updating activation key and system content view options
Merge pull request #52 from Katello/delete-legacy-promotion

Merging delete legacy promotion code into master by reverting reverted code