* minro code edits
* Added support for acknowledging code of conduct
- Added CodeOfConduct component that shows links and a checkbox that must be acknwledged before seeing the public galley
- Added verbose message for notebook publish error (when another notebook with the same name exists in the gallery)
- Added a feature flag for enabling code of conduct acknowledgement
* Added Info Component
* minor edit
* fixed failign tests
* publish tab displayed only when code of conduct accepted
* added code of conduct fetch during publish
* fixed bug
* added test and addressed PR comments
* changed line endings
* added comment
* addressed PR comments