Restores the previous notes behaviour.

This also changes some of the UI.
Merge branch 'feature/restore-notes'
Adds support for active block class.
Adds the actual styles for the active class.
Introduces timeout into active highlight.
Fixes some style issues.
Merge branch 'feature/single-side-menu'
Fix focus issue.
[#78729256] Style trevor block deletion.
Merge branch 'master' of github.com:bitcrowd/sir-trevor-js into feature/78729256-style-trevor-block-deletion

Conflicts:
	sir-trevor.js