- sticky doesn't work well with overflow: hidden parents. These overflows were used to hide other issues which shouldn't exist anyways. If it causes issues we should fix the root cause.
- our `--header-offset` is changing a lot on safari while scrolling, sometimes with very unexpected value like: negative or very high value, which causes the navbar to appear at unexpected positions for few ms, this commit is using the value of the header on insert and not changing it after, it shouldn't cause any issue.
This commit adds a new "My threads" link in sidebar and drawer. This link will open the "/chat/threads" page which contains all threads where the current user is a member. It's ordered by activity (unread and then last message created).
Moreover, the threads list of a channel page is now showing every threads of a channel, and not just the ones where you are a member.
