v0.23.2-0 QA Review

[smashwilson]

Backported bugfixes from v0.24.0 onto the v0.23.0 release line.

Changes to verify

• Cache token scope check failures #1871: Cache token scope check failures
• UserStore handles GitHub remotes that no longer exist #1869: UserStore handles GitHub remotes that no longer exist
• Backportable keymap changes #1847: Backportable keymap changes
• Fix bug where pull request cannot be viewed if pullRequest.headRepository is null. #1828: Fix bug where pull request cannot be viewed if pullRequest.headRepository is null.
• Suppress "Unable to locate git workspace root" error #1809: Suppress "Unable to locate git workspace root" error

Other changes in this release

N/A