This PR adds a new notification cleaning mode, super perfectly tuned for accessibility, and removes the previous notification cleaning functionality as it's now redundant.

* w.i.p. notif clearing mode

* Better CSS for selected notification and shorter text if Stretch is off

* wip for rebase ~

* all working in notif clearing mode, except the actual removal

* bulk delete route for piggo

* cleaning + refactor. endpoint gives 422 for some reason

* formatting

* use the right route

* fix broken destroy_multiple

* load more notifs after succ cleaning

* satisfy eslint

* Removed CSS for the old notif delete button

* Tabindex=0 is mandatory

In order to make it possible to tab to this element you must have tab index = 0. Removing this violates WCAG and makes it impossible to use the interface without good eyesight and a mouse. So nobody with certain mobility impairments, vision impairments, or brain injuries would be able to use this feature if you don't have tabindex=0

* Corrected aria-label

Previous label implied a different behavior from what actually happens

* aria role localization & made the overlay behave like a checkbox

* checkboxes css and better contrast

* color tuning for the notif overlay

* fanceh checkboxes etc and nice backgrounds

* SHUT UP TRAVIS

* Added DELETE verb for notifications

* Added notification dismiss button to status dropdown

* Added reveal-on-hover notif dismiss button, added FollowNotification component

* Redesign the landing page, mount public timeline on it

* Adjust the standalone mounted component to the lacking of router

* Adjust auth layout pages to new design

* Fix tests

* Standalone public timeline polling every 5 seconds

* Remove now obsolete translations

* Add responsive design for new landing page

* Address reviews

* Add floating clouds behind frontpage form

* Use access token from public page when available

* Fix mentions and hashtags links, cursor on status content in standalone mode

* Add footer link to source code

* Fix errors on pages that don't embed the component, use classnames

* Fix tests

* Change anonymous autoPlayGif default to false

* When gif autoplay is disabled, hover to play

* Add option to hide the timeline preview

* Slightly improve alt layout

* Add elephant friend to new frontpage

* Display "back to mastodon" in place of "login" when logged in on frontpage

* Change polling time to 3s

* feat: Lazy-load routes

* feat: Lazy-load modals

* feat: Lazy-load columns

* refactor: Simplify Bundle API

* feat: Optimize bundles

* feat: Prevent flashing the waiting state

* feat: Preload commonly used bundles

* feat: Lazy load Compose reducers

* feat: Lazy load Notifications reducer

* refactor: Move all dynamic imports into one file

* fix: Minor bugs

* fix: Manually hydrate the lazy-loaded reducers

* refactor: Move all dynamic imports to async-components

* fix: Loading modal style

* refactor: Avoid converting the raw state for each lazy hydration

* refactor: Remove unused component

* refactor: Maintain modal name

* fix: Add as=script to preload link

* chore: Fix lint error

* fix(components/bundle): Check if timestamp is set when computing elapsed

* fix: Load compose reducers for the onboarding modal

This fixes a warning on status unmounting (e.g. deletion).

This also resets IntersectionObserverWrapper on disconnect to avoid `unobserve()` calls
which has bug in Edge.

- Better unified reblogs, statuses, and notifications
- Polished up collapsed toots greatly
- Apologies to bea if this makes everything more difficult

- built in fullwidth styling
 - letterbox settings toggle
 - media no longer counts towards height when making toot-collapsing
measurements

- Media toots are no longer auto-collapsed if the media is behind a CW
- Display names no longer appear clickable when a toot is collapsed
- Fixed #36 by adding reduplicating the media icon inside the SHOW
MORE/LESS

ref https://tc39.github.io/proposal-decorators/

(This patch has been merged as bugfix and reverted, but still valuable as
improvement)

Previously, we've attached IntersectionObserver twice for boosted statuses:
wrapper Status and wrapped Status. but wrapped Status don't need to manage
intersection and visibility by itself, because it's a part of wrapper Status.

* Revert "Bump version to 1.4.4"

This reverts commit 1585b0c6cc.

* Revert "Fix conversations (fixes #3869) (#3870)"

This reverts commit 15b43f555d.

* Revert "Fix streaming server. Redis connection subscribe for each channel. (#3828)"

This reverts commit d8ec832806.

* Revert "Filter direct statuses in Status.as_home_timeline (#3842)"

This reverts commit bab5a18232.

* Revert "Fix RemoteFollow behavior (#3868)"

This reverts commit a20cf3b64e.

* Revert "Update fabricator for MediaAttachment to attach a file according to type (#3862)"

This reverts commit 356df7ae6b.

* Revert "Upgrade React Router (#3677)"

This reverts commit 8f03fdce7f.

* Revert "Do not call setState from unmounted component (#3853)"

This reverts commit 1fc6cb4997.

* Revert "Replace TextIconButton for SensitiveButton to IconButton (#3759)"

This reverts commit eb832e88f4.

* Revert "Fix RTL detection on Ruby side (#3867)"

This reverts commit b16b69350e.

* Revert "i18n: Fixed typo in Polish translation (#3864)"

This reverts commit da6fa029f6.

* Revert "Don't attach IntersectionObserver for wrapped statuses (#3863)"

This reverts commit 94ad0706f5.

* chore(yarn): Remove react-router

* chore(yarn): Remove react-router-scroll

* chore(yarn): Remove history

* chore(yarn): Add react-router-dom

* chore: Remove usages of react-router-scroll

* refactor: Upgrade to react-router-web

* refactor: Use fork of react-router-scroll

This reverts commit 2ddea9a6c8.

* fix: Issues mentions in the PR feedback

Stop an executing task if the component already unmounted.

This fixes a bug that sometimes boosted statuses being hidden on scrolling.

Previously, we've attached IntersectionObserver twice for boosted statuses:
wrapper Status and wrapped Status. This will call intersection handler twice,
so this may results race condition...probably.

* Add react/no-string-refs ESLint rule

* Add react/jsx-boolean-value ESLint rule

* Add react/jsx-closing-bracket-location ESLint rule

* Add react/jsx-indent ESLint rule

* Add react/jsx-curly-spacing ESLint rule

* Add react/jsx-equals-spacing ESLint rule

* Add react/jsx-first-prop-new-line ESLint rule

* Add react/jsx-no-duplicate-props ESLint rule

* Add react/jsx-tag-spacing ESLint rule

I've found this issue when I clicked replies to muted user on the timeline.

Properties I've removed in here were added with lazy loading using
IntersectionObserver (8e4d1cba), but those statuses are not need to be
tracked anyway because it will be rendered as only empty div.