[Feature]关于 note.css 界面美化（note的外观主题）

[Geo123abc]

重度使用的 zotero-better-notes 的朋友是否想过修改一下zotero note 的外观显示（外观主题），就是渲染效果，

详细参考：

Notes are still white · Issue #17 · Rosmaninho/Zotero-Dark-Theme

Make note editor beautiful - Zotero Forums

zotero/note-editor: Note editor for Zotero

"note.css"(@HTTP);

1. open Zotero
2. go to Preferences → Advanced → Config Editor
3. I accept the risks!
4. search extensions.zotero.note.css and double-click it
5. Insert the following string, an edited version of the one cited above
6. click 'OK'
7. 重启zotero