v8.0.0-beta3 Clustering

This release closes off a small number of issues.

Bug Fixes:

• Inability for a user to log out #103
• OIDC and PAM login settings should be able to be set #106
• One failing MFA method no longer disables all other MFA methods #102

Changes:

• Cluster error events should give their context as a string rather than a collection of bytes #104