Webpack (#1367)

* Replace gulp with webpack and npm scripts for JS compilation
* Set up Travis CI to commit compiled JS
* Restructure `js` directory; only one instance of npm, forum/admin are "submodules"
* Refactor JS initializers into Application subclasses
* Maintain partial compatibility API (importing from absolute paths) for extensions
* Remove minification responsibility from PHP asset compiler
* Restructure `less` directory

js/src/forum/components/ChangePasswordModal.js

@@ -0,0 +1,49 @@
+import Modal from '../../common/components/Modal';
+import Button from '../../common/components/Button';
+
+/**
+ * The `ChangePasswordModal` component shows a modal dialog which allows the
+ * user to send themself a password reset email.
+ */
+export default class ChangePasswordModal extends Modal {
+  className() {
+    return 'ChangePasswordModal Modal--small';
+  }
+
+  title() {
+    return app.translator.trans('core.forum.change_password.title');
+  }
+
+  content() {
+    return (
+      <div className="Modal-body">
+        <div className="Form Form--centered">
+          <p className="helpText">{app.translator.trans('core.forum.change_password.text')}</p>
+          <div className="Form-group">
+            {Button.component({
+              className: 'Button Button--primary Button--block',
+              type: 'submit',
+              loading: this.loading,
+              children: app.translator.trans('core.forum.change_password.send_button')
+            })}
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+  onsubmit(e) {
+    e.preventDefault();
+
+    this.loading = true;
+
+    app.request({
+      method: 'POST',
+      url: app.forum.attribute('apiUrl') + '/forgot',
+      data: {email: app.session.user.email()}
+    }).then(
+      this.hide.bind(this),
+      this.loaded.bind(this)
+    );
+  }
+}