Update EM->trigerUntil to be an alias of trigger

They contained the exact same code/logic. The only difference was the
conditional around checking if the callback was valid, but the outcome
is the same for both. This simply reduces duplicate code and causes no
change in behavior at all.
Deprecate EventManager->triggerUntil() method
Merge branch 'hotfix/#6927-#6278-jcb-credit-card-validator-allowed-ranges-update'

Close #6927
Close #6278
Fixed #6941
#6941 #6943 - better handling of skipped MX-related EmailAddress validator network-based tests
Merge branch 'hotfix/#6941-#6943-undefined-constant-check-in-test-suite'

Close #6941
Close #6943
Merge branch 'hotfix/#6941-#6943-undefined-constant-check-in-test-suite' into develop

Close #6941
Close #6943
Forward port #6941
Forward port #6943
Update phpunit to 4.0.0 in CONTRIBUTING.md, tests/Bootstrap.php, and Zend\Test\composer.json
based on #6909
#6942 - direct links to contributors resources
#6942 - RFCs as github issues are good enough
#6942 - simplifying testing setup/installation/run explanation
#6942 - s/http/https
#6942 - clarifying: security issues should not land in the public issue tracker
Merge branch 'docs/#6942-#6909-phpunit-4.0-in-docs' into develop

Close #6942
 Fixes latest build on develop : braces
Merge branch 'cs/#6940-braces-fixes' into develop

Close #6940
Fixes latest build on master : trailing_spaces
Merge branch 'cs/#6939-trailing-spaces-in-zend-validator-hostname'

Close #6939
Merge branch 'cs/#6939-trailing-spaces-in-zend-validator-hostname' into develop

Close #6939
Forward port #6939
Use self.version at Zend\Debug composer.json for require zend/escaper