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/UserSerializer.php

@@ -0,0 +1,69 @@
+<?php namespace Flarum\Api\Serializers;
+
+use Flarum\Core\Models\User;
+
+class UserSerializer extends UserBasicSerializer
+{
+    /**
+     * The name to use for Flarum events.
+     * @var string
+     */
+    protected static $eventName = 'User';
+
+    /**
+     * Default relations to include.
+     * @var array
+     */
+    protected $include = ['groups'];
+
+    /**
+     * Serialize attributes of a User model for JSON output.
+     *
+     * @param User $user The User model to serialize.
+     * @return array
+     */
+    protected function attributes(User $user)
+    {
+        $attributes = parent::attributes($user);
+
+        $actorUser = static::$actor->getUser();
+        $canEdit = $user->can($actorUser, 'edit');
+
+        $attributes += [
+            'joinTime'         => $user->join_time ? $user->join_time->toRFC3339String() : null,
+            'lastSeenTime'     => $user->last_seen_time ? $user->last_seen_time->toRFC3339String() : null,
+            'discussionsCount' => (int) $user->discussions_count,
+            'postsCount'       => (int) $user->posts_count,
+            'canEdit'          => $canEdit,
+            'canDelete'        => $user->can($actorUser, 'delete'),
+        ];
+
+        if ($canEdit) {
+            $attributes += [
+                'isActivated' => $user->is_activated,
+                'email'       => $user->email,
+                'isConfirmed' => $user->is_confirmed
+            ];
+        }
+
+        if ($user->id === $actorUser->id) {
+            $attributes += [
+                'readTime' => $user->read_time ? $user->read_time->toRFC3339String() : null,
+            ];
+        }
+
+        return $this->attributesEvent($user, $attributes);
+    }
+
+    /**
+     * Get a collection containing a user's groups.
+     *
+     * @param User $user
+     * @param array $relations
+     * @return Tobscure\JsonApi\Collection
+     */
+    protected function includeGroups(User $user, $relations)
+    {
+        return (new GroupSerializer($relations))->collection($user->groups);
+    }
+}