Fixed minor issues in param yaml scripts. Updated workflow to add jobs and create relevant pegasus information.  Workflow can now generate download and alignment jobs, still needs testing.  Setup updated to include job-scripts.

Added genome validation.  Added module loading with minor validation.  Added required file detection in modules.

Added download script.  Updated job yaml.  Updated module yaml.  Add executable loading to workflow code.  Updated database validation for new inputs.

Added initial yamlJob class.  Added tester file for individual tests.  Added missing command entry to bwa_align_paired.yaml.  Added internal configuration