Merge branch 'osg' into 'master'

content/OSG/_index.md

...ent/OSG/a_simple_example_of_submitting_an_htcondor_job.md

content/OSG/characteristics_of_an_osg_friendly_job.md

content/OSG/how_to_submit_an_osg_job_with_htcondor.md

content/OSG/using_distributed_environment_modules_on_osg.md