make local time message was written appear on timestamp hover

[cblgh]

thanks to @Ariganu for the idea!

[neauoire]

We need to add timezones to the portal son for this, right?

[aeonofdiscord]

Don't think so? As long as all message timestamps are written in UTC+0 we can pick up the local TZ from the browser at render time (unless I'm missing something)

[0x0ade]

"local time message was written" sounds like the author's local time, not the reader's local time, and that pretty much requires a new "timezone offset" field in the portal.json (AFAIK we've got no other means of assuming the author's timezone at the moment).

[pfrazee]

I'm 99% sure @aeonofdiscord is right. A JS date, when converted to a number or serialized as a string, is UTC+0. When you read that number/string into a JS date, it applies the local timezone.