Upgrade to L5 + huge refactor + more. closes #2

New stuff:
- Signup + email confirmation.
- Updated authentication strategy with remember cookies. closes #5
- New search system with some example gambits! This is cool - check out
the source. Fulltext drivers will be implemented as decorators
overriding the EloquentPostRepository’s findByContent method.
- Lay down the foundation for bootstrapping the Ember app.
- Update Web layer’s asset manager to properly publish CSS/JS files.
- Console commands to run installation migrations and seeds.

Refactoring:
- New structure: move models, repositories, commands, and events into
their own namespaces, rather than grouping by entity.
- All events are classes.
- Use L5 middleware and command bus implementations.
- Clearer use of repositories and the Active Record pattern.
Repositories are used only for retrieval of ActiveRecord objects, and
then save/delete operations are called directly on those ActiveRecords.
This way, we don’t over-abstract at the cost of Eloquent magic, but
testing is still easy.
- Refactor of Web layer so that it uses the Actions routing
architecture.
- “Actor” concept instead of depending on Laravel’s Auth.
- General cleanup!

src/Api/Serializers/PostSerializer.php

@@ -0,0 +1,108 @@
+<?php namespace Flarum\Api\Serializers;
+
+use Flarum\Core\Models\Post;
+use Flarum\Core\Models\User;
+
+class PostSerializer extends PostBasicSerializer
+{
+    /**
+     * Default relations to link.
+     * @var array
+     */
+    protected $link = ['discussion'];
+
+    /**
+     * Default relations to include.
+     * @var array
+     */
+    protected $include = ['user', 'editUser', 'hideUser'];
+
+    /**
+     * Serialize attributes of a Post model for JSON output.
+     *
+     * @param  Post  $post The Post model to serialize.
+     * @return array
+     */
+    protected function attributes(Post $post)
+    {
+        $attributes = parent::attributes($post);
+        $user = static::$actor->getUser();
+
+        unset($attributes['content']);
+
+        $canEdit = $post->can($user, 'edit');
+
+        if ($post->type === 'comment') {
+            $attributes['contentHtml'] = $post->content_html;
+            if ($canEdit) {
+                $attributes['content'] = $post->content;
+            }
+        } else {
+            $attributes['content'] = json_encode($post->content);
+        }
+
+        if ($post->edit_time) {
+            $attributes['editTime'] = $post->edit_time->toRFC3339String();
+        }
+
+        if ($post->hide_time) {
+            $attributes['isHidden'] = true;
+            $attributes['hideTime'] = $post->hide_time->toRFC3339String();
+        }
+
+        $attributes += [
+            'canEdit'   => $canEdit,
+            'canDelete' => $post->can($user, 'delete')
+        ];
+
+        return $this->attributesEvent($post, $attributes);
+    }
+
+    /**
+     * Get a resource containing a post's user.
+     *
+     * @param Post $post
+     * @param array $relations
+     * @return Tobscure\JsonApi\Resource
+     */
+    public function includeUser(Post $post, $relations = [])
+    {
+        return (new UserSerializer($relations))->resource($post->user);
+    }
+
+    /**
+     * Get a resource containing a post's discussion.
+     *
+     * @param Post $post
+     * @param array $relations
+     * @return Tobscure\JsonApi\Resource
+     */
+    public function includeDiscussion(Post $post, $relations = [])
+    {
+        return (new DiscussionBasicSerializer($relations))->resource($post->discussion);
+    }
+
+    /**
+     * Get a resource containing a post's edit user.
+     *
+     * @param Post $post
+     * @param array $relations
+     * @return Tobscure\JsonApi\Resource
+     */
+    public function includeEditUser(Post $post, $relations = [])
+    {
+        return (new UserBasicSerializer($relations))->resource($post->editUser);
+    }
+
+    /**
+     * Get a resource containing a post's hide user.
+     *
+     * @param Post $post
+     * @param array $relations
+     * @return Tobscure\JsonApi\Resource
+     */
+    public function includeHideUser(Post $post, $relations = [])
+    {
+        return (new UserBasicSerializer($relations))->resource($post->hideUser);
+    }
+}