* Fix “read more” button behing hidden (regression from #11404)

This has the side-effect of putting the “Read more” button below possibly
trunctated polls instead of putting the poll below the “Read more”

* Remove dead code

Fix #7629

Fix #10227

Fix #11466

Fix #11478

- Focus first item when activated via keyboard
- When the dropdown menu closes, give back the focus to
  the actual element which was focused prior to opening the menu

Fixes #11496

* Trap tab in privacy dropdown

* Give focus back to last focused element when privacy dropdown menu closes

* Actually give back focus to the element that had it before clicking the dropdown

* Allow selecting menu items with the space bar in status dropdown menus

* Fix modals opened by keyboard navigation being immediately closed

* Fix menu items triggering modal actions

* Add Tab trapping inside dropdown menu

* Give focus back to last focused element when status dropdown menu closes

It resolves #11338

* Bind to 0.0.0.0

* Make Procfile common to main and streaming apps

Fix #6462

* Add spec covering numeric-only hashtags

* Fix hashtag regex

* Added logout to dropdown menu

* Triggering build-and-test with empty commit as it seems it failed due to some internal failure

* Looks fine, ready to review

* Added changes from review

* method can be null without any problems

* Also target can be null

* Add test

* Fix code for sanitizing nested lists stripping all tags