consistently sort contacts by first name, last name
add summary, details to API entity/check status
update doc submodule
Merge pull request #198 from ali-graham/197_api_status_summary_details

add summary, details to API entity/check status
Merge branch 'master' of github.com:flpjck/flapjack
prepare for 0.7.9 release
minor code cleanup
fixes #154 - add unknown handling to EntityCheck#last_notification
prepare 0.7.10 release