oh yes, I sort of understood your comment the other way: move updateHeadercontent to Utils, which I thought was weird. But now I understand it correctly. I'm not sure because FixedHeader is supposed to be more generic that only time headers, and at the end shared between apps. (or completely removed in favor of using `position:sticky` ;) ). I dont like having the time headers utility functions in a generic utils either, but since it's shared between ThreadUI and ThreadListUI we need to put it in an utilities object anyway.

so, well, I'd say that for now, let's do nothing ;)