[api] support new CVE-YYYY-NNNN* syntax as specified by mitre.org

http://cve.mitre.org/cve/identifiers/syntaxchange.html
[api] remove test that no longer makes sense

as the lastnotifications fetching is blocking now, we can't do it in
test cases unless we generate events in the backend
[api] continue refactoring BsRequestAction model
[api] remove one duplication in source controller
[api] groups can have an email adress now
[backend] support master dispatcher in dispatchprio get/put
[api] Better logs for Sphinx related tasks in clockworkd -l
[dist] add logging to clockworkd
Merge remote-tracking branch 'upstream/master'