Trigger user update job on entitlement create/delete
Summary: Looks that some refactoring did remove that for some SKUs. Tests added. Also cleaned up redundant phpdoc across handlers.
Test Plan: ./phpunit
Reviewers: #hkccp_developers, mollekopf
Reviewed By: #hkccp_developers, mollekopf
Subscribers: #hkccp_developers
Differential Revision: https://git.kolab.org/D4920