- l10n: Add Chinese (simplified) extension locales (Thanks, @enlove!)

- Linting (ESLint): Avoid reporting `no-console`
- Refactoring: Avoid Firefox console errors with hidden iframe
- Docs (CHANGES): Fix Markdown heading level

editor/extensions/ext-locale/star/zh-CN.js

@@ -0,0 +1,22 @@
+export default {
+  name: '星形',
+  buttons: [
+    {
+      title: '星形工具'
+    }
+  ],
+  contextTools: [
+    {
+      title: '顶点',
+      label: '顶点'
+    },
+    {
+      title: '钝度',
+      label: '钝度'
+    },
+    {
+      title: '径向',
+      label: '径向'
+    }
+  ]
+};