Create Donation order item
Add tax-deductible messaging to the confirmation email and receipt pages.
Update receipt page to make the course URL optional
Merge pull request #5482 from edx/will/cybersource-donations

CyberSource donations (back-end)
add Solano CI.
Merge PR#3. Solano: Add post worker hook for copying artifacts.
fixed capturing screenshots
adding post worker script
fixing file log error
introduce bok-choy shards, new firefox version
re-shard lms to fix a failing test.
Add quality report capability.