Notifications shouldn't share panel with room-specific items

[heyakyra]

In addition to being difficult to find, and not very helpful due to lack of indication for new notifications (#5278) and lack of keyword notifications (#5382), the placement is highly counter-intuitive as it shares a panel with (and hides behind) two items which are room-specific: users list and file uploads.

[lampholder]

God knows where it goes, but you're right - it's highly confusing that it's the one not-room-specific item living on the right hand side panel.

[novocaine]

I'm not sure this is relevant without a screenshot from 2021, and it definitely isn't major as it does not significantly degrade functionality. @heyakyra if you're still concerned about this, please post a screenshoot illustrating your concerns :)