Allow members to like posts by default and add setting

closes flarum/core#344

extensions/likes/js/admin/Gulpfile.js

@@ -0,0 +1,7 @@
+var gulp = require('flarum-gulp');
+
+gulp({
+  modules: {
+    'likes': 'src/**/*.js'
+  }
+});

extensions/likes/js/admin/package.json

@@ -0,0 +1,7 @@
+{
+  "private": true,
+  "devDependencies": {
+    "gulp": "^3.8.11",
+    "flarum-gulp": "^0.1.0"
+  }
+}

extensions/likes/js/admin/src/main.js

@@ -0,0 +1,12 @@
+import { extend } from 'flarum/extend';
+import app from 'flarum/app';
+import PermissionGrid from 'flarum/components/PermissionGrid';
+
+app.initializers.add('likes', () => {
+  extend(PermissionGrid.prototype, 'replyItems', items => {
+    items.add('likePosts', {
+      label: 'Like posts',
+      permission: 'discussion.likePosts'
+    });
+  });
+});

extensions/likes/js/forum/package.json

@@ -2,6 +2,6 @@
   "private": true,
   "devDependencies": {
     "gulp": "^3.8.11",
-    "flarum-gulp": "git+https://github.com/flarum/gulp.git"
+    "flarum-gulp": "^0.1.0"
   }
 }