v2.4.0-beta3

This is the third beta release of v2.4.0, which ships with the following changelog:

* Enhancement: better onboarding experience
* Enhancement: per-user and bulk user invites to use Clef
* Enhancement: less CSS loaded by default, including 0 on all non-admin pages
* Enhancement: dashboard widget to help new users get setup
* Enhancement: easily reset your Clef settings
* Fix: reduced frequency of "invalid state" errors