Use environment variable for db URL if available.
Add Postgresql support for Heroku db.
Add init and upgrade to Procfile.
Prepare app for Heroku launch.
Update logging for stdout stream.
Specify all string column widths in tables.
Add db migration to implement new column widths.
Fix column width for Outcome descriptions.
Fix launching target.
Separate logging from debug.
Fix Outcome description column width.
Complete Outcome.description migration.
Restore local launch for foreman start.
Update breadcrumb path for editing course content.
Enable content add & remove buttons.
Add language translation utilities.
Update ES translations.
Update login page.