将流行功能引入Discourse：头部搜索、欢迎横幅和类别图标/表情符号

[mcwumbly (Dave McClure)]

@tomtjes

I use category icons to indicate whether a category is public, visible to logged-in members, or limited to certain groups.

I like this. I wonder if we should consider this a signal of something missing more fundamentally, rather than pushing this burden onto admins to solve with customizations.

Also related: Allow users with access to a restricted category to see who else has access