Rename JS sub-components so that descriptors are before the noun, not after

To be consistent with the naming in PHP world.

e.g. ReplyComposer instead of ComposerReply

js/forum/src/components/event-post.js

@@ -0,0 +1,23 @@
+import Post from 'flarum/components/post';
+import username from 'flarum/helpers/username';
+import icon from 'flarum/helpers/icon';
+import humanTime from 'flarum/utils/human-time';
+import { dasherize } from 'flarum/utils/string';
+
+export default class EventPost extends Post {
+  view(iconName, content, attrs) {
+    var post = this.props.post;
+
+    attrs = attrs || {};
+    attrs.className = 'event-post post-'+dasherize(post.contentType())+' '+(attrs.className || '');
+
+    return super.view([
+      icon(iconName+' post-icon'),
+      m('div.event-post-info', [
+        m('a.post-user', {href: app.route('user', { username: post.user().username() }), config: m.route}, username(post.user())), ' ',
+        content
+      ]),
+      m('div.event-post-time', humanTime(post.time()))
+    ], attrs);
+  }
+}