Fix export of configurable #139

This fix depend on PR on the pim side see link below for more infos:
https://github.com/akeneo/pim-community-dev/pull/1094/files
Merge branch 'master' into fix/variant-groups
Fix php specs for configurable #139
New function in connector removed from pim #168

Added a new function that was removed from pim because it wasn't used
in pim anymore.
Fix doc
Fix PSR2 violations
Fix PSR2 violations
Merge pull request #170 from akeneo/fix/variant-groups

Fix/variant groups
Merge pull request #169 from akeneo/fix/pim-compatibility

Fix/pim compatibility
Merge branch 'master' into enhancement/improveValidationCalls

Conflicts:
	Validator/Constraints/HasValidCredentialsValidator.php
	Webservice/UrlExplorer.php