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/status/action_bar.js

@@ -24,7 +24,6 @@ const messages = defineMessages({
   report: { id: 'status.report', defaultMessage: 'Report @{name}' },
   muteConversation: { id: 'status.mute_conversation', defaultMessage: 'Mute conversation' },
   unmuteConversation: { id: 'status.unmute_conversation', defaultMessage: 'Unmute conversation' },
-  deleteNotification: { id: 'status.dismiss_notification', defaultMessage: 'Dismiss notification' },
 });
 
 @injectIntl
@@ -36,7 +35,6 @@ export default class StatusActionBar extends ImmutablePureComponent {
 
   static propTypes = {
     status: ImmutablePropTypes.map.isRequired,
-    notificationId: PropTypes.number,
     onReply: PropTypes.func,
     onFavourite: PropTypes.func,
     onReblog: PropTypes.func,
@@ -46,7 +44,6 @@ export default class StatusActionBar extends ImmutablePureComponent {
     onBlock: PropTypes.func,
     onReport: PropTypes.func,
     onMuteConversation: PropTypes.func,
-    onDeleteNotification: PropTypes.func,
     me: PropTypes.number,
     withDismiss: PropTypes.bool,
     intl: PropTypes.object.isRequired,
@@ -100,10 +97,6 @@ export default class StatusActionBar extends ImmutablePureComponent {
     this.props.onMuteConversation(this.props.status);
   }
 
-  handleNotificationDeleteClick = () => {
-    this.props.onDeleteNotification(this.props.notificationId);
-  }
-
   render () {
     const { status, me, intl, withDismiss } = this.props;
     const reblogDisabled = status.get('visibility') === 'private' || status.get('visibility') === 'direct';
@@ -120,7 +113,6 @@ export default class StatusActionBar extends ImmutablePureComponent {
 
     if (withDismiss) {
       menu.push({ text: intl.formatMessage(mutingConversation ? messages.unmuteConversation : messages.muteConversation), action: this.handleConversationMuteClick });
-      menu.push({ text: intl.formatMessage(messages.deleteNotification), action: this.handleNotificationDeleteClick });
       menu.push(null);
     }