Code review comment for lp://staging/~gtg-user/gtg/gmail-like-ui

Hello,
this branch is just a coded mockup, is not ready for merging (I know, I've coded it with Kevin! :-D).
Besides, there is still an ongoing discussion on whether this feature is wanted or not (#384049).
If it's dropped but many people want this, maybe I can figure out to provide this as a plugin.