Overflow menu doesn't adapt to long extension names

As the title says, the overflow menu width doesn't adapt to long names, so you end up with strings right up against the right edge of the menu.

In decreasing order order of recommendations:

1. Redesign the menu so it accommodates longer names (typography sizes and other tweaks)
2. Widen the width a bit, and then long text wraps below the name for stuff that's still too long
3. Reduce the text size
4. Keep the width the same, but truncate the name

In any option, there needs to be consistent padding on the left and right sides of the menu.

Version 0.99.132.2-rc (WebKit 621.1.2.111.4)

Sequoia (15)