Topic text peeks over container / Aux panel misaligned

[turt2live]

Description

A very minor thing, but it is a bit weird to only see the top 3px of each character on the line I can't read anyways (the third topic line). The "Today" line has nothing to do with this - it is a pre-existing issue.

Steps to reproduce

• Have a long topic in a room

Log: not sent

Version information

• Platform: web (in-browser)
• Browser: Chrome 60
• OS: Windows 10
• URL: riot.im/develop

[turt2live]

Turns out this is the 4px padding on the widgets tray. It also causes the line to be misaligned with the left and right columns.

[turt2live]

This has gotten even worse due to recent PRs

Note the alignment of the bottom border.

@lampholder priority bump due to severe misalignment?

[turt2live]

Closing this in favour of #5656 because it is getting more traffic.