css: Word break doesn't always apply to correct column

[aDotInTheVoid]

In queue/rust it looks like

(assignee gets word-break'd, head-ref doesn't)

This is because their is a variable number of collumns in the table, and I only checked for queue/all not queue/rust when doing #135

Solution is to add a class to the head-ref collumn in the template, and reference that, instread of nth-child(8)