New notification cleaning mode (#89)

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

app/javascript/glitch/components/notification/container.js

@@ -24,7 +24,6 @@ import { makeGetNotification } from '../../../mastodon/selectors';
 
 //  Our imports  //
 import Notification from '.';
-import { deleteNotification } from '../../../mastodon/actions/notifications';
 
 //  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 
@@ -53,21 +52,4 @@ const makeMapStateToProps = () => {
 
 //  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 
-/*
-
-Dispatch mapping:
------------------
-
-The `mapDispatchToProps()` function maps dispatches to our store to the
-various props of our component. We only need to provide a dispatch for
-deleting notifications.
-
-*/
-
-const mapDispatchToProps = dispatch => ({
-  onDeleteNotification (id) {
-    dispatch(deleteNotification(id));
-  },
-});
-
-export default connect(makeMapStateToProps, mapDispatchToProps)(Notification);
+export default connect(makeMapStateToProps)(Notification);