Added buttons and menu items to dismiss individual notifications (#76)

* Added DELETE verb for notifications

* Added notification dismiss button to status dropdown

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

app/javascript/glitch/components/status/prepend.js

@@ -23,11 +23,17 @@ import React from 'react';
 import PropTypes from 'prop-types';
 import ImmutablePropTypes from 'react-immutable-proptypes';
 import escapeTextContentForBrowser from 'escape-html';
+import { defineMessages, injectIntl } from 'react-intl';
 import { FormattedMessage } from 'react-intl';
 
 //  Mastodon imports  //
 import emojify from '../../../mastodon/emoji';
 
+
+const messages = defineMessages({
+  deleteNotification: { id: 'status.dismiss_notification', defaultMessage: 'Dismiss notification' },
+});
+
                             /* * * * */
 
 /*
@@ -53,12 +59,16 @@ element.
 
 */
 
+@injectIntl
 export default class StatusPrepend extends React.PureComponent {
 
   static propTypes = {
     type: PropTypes.string.isRequired,
     account: ImmutablePropTypes.map.isRequired,
     parseClick: PropTypes.func.isRequired,
+    notificationId: PropTypes.number,
+    onDeleteNotification: PropTypes.func,
+    intl: PropTypes.object.isRequired,
   };
 
 /*
@@ -77,6 +87,10 @@ an account link is clicked.
     parseClick(e, `/accounts/${+account.get('id')}`);
   }
 
+  handleNotificationDeleteClick = () => {
+    this.props.onDeleteNotification(this.props.notificationId);
+  }
+
 /*
 
 ####  `<Message>`.
@@ -145,7 +159,19 @@ the `<Message>` inside of an <aside>.
 
   render () {
     const { Message } = this;
-    const { type } = this.props;
+    const { type, intl } = this.props;
+
+    const dismissTitle = intl.formatMessage(messages.deleteNotification);
+    const dismiss = this.props.notificationId ? (
+      <button
+        aria-label={dismissTitle}
+        title={dismissTitle}
+        onClick={this.handleNotificationDeleteClick}
+        className='status__prepend-dismiss-button'
+      >
+        <i className='fa fa-eraser' />
+      </button>
+    ) : null;
 
     return !type ? null : (
       <aside className={type === 'reblogged_by' ? 'status__prepend' : 'notification__message'}>
@@ -157,6 +183,7 @@ the `<Message>` inside of an <aside>.
           />
         </div>
         <Message />
+        {dismiss}
       </aside>
     );
   }