2875: add description to jobs and pipeline_instances.
2875: add new partial to display name and description.
Merge branch 'master' into 2875-pipeline-description

Conflicts:
	services/api/app/models/pipeline_instance.rb
	services/api/db/structure.sql
2875: set initial description on the new pipeline instance created by running a template.
Merge branch 'master' into 2875-pipeline-description
2875: initial description on pipeline instance when the template has no name.
Merge branch 'master' into 2875-pipeline-description
2875: add initial description to pipeline instance when created using arv-run-pipeline-instance script
2875: add description option
2875: render template description as textile attribte in show recent page
2875: integration tests to verify description on pipeline templates, instances, and jobs.
2875: remove junk migration lines
2875: collection description is now textile and also the display is updated.
2875: minor text update
closes #2875
Merge branch '2875-pipeline-description'