Tanglu Don't unblock already unblocked jobs
Fix bad copy-paste in last commit
Merge remote-tracking branch 'upstream/master'
trivial: Update my gpg fingerprint
tanglu: Add ssl-setup steps to build-setup information
Fix status printing in unblock_debile_jobs
Update session lifecycle management

debile.master.utils.session() is now equivalent to the session_scope() example in the SQLAlchemy ORM documentation.
Improve and reconcile the dud.py and changes.py implementations
Improve/Add debilize()/__str__()/__repr__() of the orm classes
Update example configuration an master installation configuration.