WYSIWYG 插件（再次）

[Falco]

@Auriel

I vote for having the ability to toggle between the standard Discourse and the proposed WYSIWYG Editor functions.

This has been discussed before:

@sam

However, a WYSIWYG editor that co-exists with our Markdown hybrid editor is an impractical project to embark on. Going back and forth from Markdown to WYSIWYG is just too big of a project, and would always cause annoying reformatting of Markdown.