Fixed job_status_type enum.
Small spacing fix
Added job_status_type enum to job_queue library
Added JobStatusType tests
Missing CMakeLists entry
Added weak reference support to observable.
Added automated enum tester and fixed an enum.
Missing test file update.
EnKF library updates
Small fixes
Merge pull request #197 from jepebe/run_ensemble_experiment

Automated enum testing and weak observer references.