Disabling the webform_civicrm handler doesn't prevent it from being called

PR: https://github.com/colemanw/webform_civicrm/pull/894 - it check if handler is enabled in _fillCiviCRMData(). This at least seems to ensure that the webform_civicrm service isn't called.

Hi @nubeli. I've reviewed & commented on the PR. Can you please have another look? Seems like there are more places that needs handling after civicrm handler is disabled.

Myself and another tester were unable to replicate the error you were getting with the PR @jitendrapurohit.

Please see https://github.com/colemanw/webform_civicrm/pull/894#issuecomment-212528....

To me it seems reasonable to expect the CiviCRM handler to not run at all if it is disabled. So please review again and hopefully can get something in to fix this issue.