[CHANGE] added exim4-light to be able to send emails for testing
Merge branch 'vagrant-chef-11' of github.com:Bigpoint/icinga into vagrant-chef-11

Conflicts:
	Vagrantfile
[CHANGE] fix merge commit
[ADD] flexible notifications; [CHANGE] fixed restart command;
Merge pull request #72 from Bigpoint/flexible-notifications

Flexible notifications