* Use Phoenix.Tracker to keep track of sessions within the cluster
* Apply review comments
* Cleanup topics and updates
* Update lib/livebook_web/live/session_live.ex
* Update phoenix deps
* Update reference to LiveDashboard encode_pid
* Fix form input id references
* Move to HEEx
* Update back to filesystem LV npm package
* Further HEEx rewrites
* Refactor icons into function components
* .html.leex -> .html.heex
* Further refactoring
* Move render helpers into function components
* Add doctype back
* Further refactoring
* Refactor cell component
* Further refactoring
* Compose sidebar using function components
* Rewrite notebook card component as function component
* Fruther refactoring
* Fix race condition in runtime tests
* Rewrite tooltips into function component
* Update Tailwind purge rules
* Revert "Rewrite tooltips into function component"
This reverts commit bd6ca8f0b5.
* Refactor conditional tooltip
* Implement cells bin
* Temporarily keep cells source
* Send complete bin entries from session to clients when a cell gets removed
* Polish styles
* Hydrate bin entries on section deletion as well
