Enhancement: pecl-manager service

 * service definition for chef
 * setup/symlink during deploy
 * restart workers
Bugfix: FC011, FC031, FC045
Change: move restart into deploy hook
Change: re-enable restart in cookbook

 * reason: deploy hooks run with non-root user
 * start script requires root
Merge pull request #98 from till/topics/pecl-manager-service

Topics/pecl manager service