Fix timestamp tooltips not aligning correctly with timestamps

[astorije]

Fixes #1998.
Fixes #2000.

Very quick, in-browser attempt at fixing #1998. Not sure if this breaks anything else.

Before	After

[astorije]

I ended up adding a commit for #2000 directly to this branch, because it's literally on the same line (all in the browser, didn't even fire my editor :successkid:).

Before	After

No idea how I break stuff with this though. I see my second commit is kinda reverting 74ca130, which isn't cool. What about applying overflow: hidden to .msg .text instead of .msg?

(btw this is why I hate opening issues: I always end up trying to fix it even when I don't have the time to do so, instead of just recording it not to forget 😅)

[xPaw]

Need to keep this rule, at least on .text. Otherwise stuff like zalgo text is going to overflow which we don't want.

[astorije]

Yeah, I mentioned that in my previous comment. I moved it to .content (it had no effect on .text, I'm guessing because it's an inline span 🤷‍♂️).

Zalgo is now prevented again. Until we want to add a tooltip in a .content, for example a status message or something, and we'll be screwed again :D
But until then, that should fix it.