Small bug fixes for the extension

[ilianoKokoro]

Proposed changes

• This fixes an incorrect redirection when clicking on a username when on the dashboard page. (See this issue)
• I added a fix for the keyboard shortcuts not working (see this)

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Checklist

• I have read the CONTRIBUTING doc
  (I could not sign the CLA)
  
• I have added necessary documentation (if appropriate)
  (N/A)
• Any dependent changes have been merged
  (N/A)

[Excellify]

Looks good, but please add an entry under changelog-nightly.md
Thank you

[ilianoKokoro]

I added a fix for the keyboard shortcuts not working (see this)