Update core permissions stuff

src/Core/CoreServiceProvider.php

@@ -182,16 +182,6 @@ class CoreServiceProvider extends ServiceProvider
 
     public function registerPermissions()
     {
-        $this->extend(
-            new Permission('forum.view'),
-            new Permission('forum.startDiscussion'),
-            new Permission('discussion.reply'),
-            new Permission('discussion.editPosts'),
-            new Permission('discussion.deletePosts'),
-            new Permission('discussion.rename'),
-            new Permission('discussion.delete')
-        );
-
         Forum::allow('*', function ($forum, $user, $action) {
             if ($user->hasPermission('forum.'.$action)) {
                 return true;
@@ -199,7 +189,7 @@ class CoreServiceProvider extends ServiceProvider
         });
 
         Post::allow('*', function ($post, $user, $action) {
-            if ($user->hasPermission('post.'.$action)) {
+            if ($post->discussion->can($user, $action.'Posts')) {
                 return true;
             }
         });

src/Core/Models/Permission.php

@@ -2,15 +2,4 @@
 
 class Permission extends Model
 {
-    protected static $permissions = [];
-
-    public static function getPermissions()
-    {
-        return static::$permissions;
-    }
-
-    public static function addPermission($permission)
-    {
-        static::$permissions[] = $permission;
-    }
 }

src/Extend/Permission.php

@@ -1,55 +0,0 @@
-<?php namespace Flarum\Extend;
-
-use Illuminate\Contracts\Container\Container;
-use Flarum\Core\Models\Permission as PermissionModel;
-
-class Permission implements ExtenderInterface
-{
-    protected $permission;
-
-    protected $serialize = false;
-
-    protected $grant = [];
-
-    public function __construct($permission)
-    {
-        $this->permission = $permission;
-    }
-
-    public function serialize($serialize = true)
-    {
-        $this->serialize = $serialize;
-
-        return $this;
-    }
-
-    public function grant($callback)
-    {
-        $this->grant[] = $callback;
-
-        return $this;
-    }
-
-    public function extend(Container $container)
-    {
-        PermissionModel::addPermission($this->permission);
-
-        list($entity, $permission) = explode('.', $this->permission);
-
-        if ($this->serialize) {
-            $extender = new SerializeAttributes(
-                'Flarum\Api\Serializers\\'.ucfirst($entity).'Serializer',
-                function (&$attributes, $model, $serializer) use ($permission) {
-                    $attributes['can'.ucfirst($permission)] = (bool) $model->can($serializer->actor->getUser(), $permission);
-                }
-            );
-
-            $extender->extend($container);
-        }
-
-        foreach ($this->grant as $callback) {
-            $model = 'Flarum\Core\Models\\'.ucfirst($entity);
-            $model::grantPermission($permission, $callback);
-        }
-    }
-}