Merged requested to merge admin_approve into master
Approved Issues Now Save To Gitlab:
- added issue_iid integerfield to class Issue.
- added new method to class Issue which try/except attempts to create a gitlab issue.
- updated .save() method for class Issue: when saving, will check if Issue.status = 'A' (approved). If status = 'A' and issue_iid = None, will execute create_gitlab_issue method and save iid.