Merge branch 'hotfix/0.21.9'
Merge branch 'hotfix/0.21.10'
Merge branch 'hotfix/0.21.11'
Update changelog
Updates Google Analytics code snippet to implement Universal Analytics as well as allow for cross-tracking between OSF and COS domains.
Merge branch 'hotfix/0.21.12' into develop
Merge branch 'release/0.21.12' into develop
Merge branch 'develop' of https://github.com/CenterForOpenScience/osf.io into feature/update-contrib-search