Allow changing of language preference from profile page
Merge pull request #5427 from edx/renzo/profile-page-preferred-language

Allow changing of language preference from profile page
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.