* Add messages informing that collections are empty

Adds empty messages to blocked users, domain blocks, favourited statuses, users
that favourited toot, follow requests, followers of given user, user's being
followed by given user, lists, muted users, toots' boosts.

Switched from using ScrollContainer to ScrollableList and/or added empty
message's text.

Fixes #4115

* Update localization files with strings for #4115

* Fix whitespace issues pointed out by codeclimate

* Adjust footer of getting started column

- Improved style
- Moved hotkeys, about this instance and logout to footer
- Removed FAQ, User Guide, Apps links
- Use hamburger icon for the column

* Add edit profile action button to profile and more to dropdown

* Add "Trending now" to getting started column

* Add preferences/security links on mobile layout

* Change icon for domain blocks

Both domain blocks and user blocks uses the same icon…

* Update index.js

* Keep list of blocked domains

Might be overkill, but I'm trying to follow the same logic as for blocked users

* Add basic domain block UI

* Add the domain blocks UI to Getting Started

* Fix undefined URL in `fetchDomainBlocks`

* Update all known users' domain_blocking relationship instead of just one's