Bug 908660 Allow more room for locales with longer strings

Rather than having some locales adjust the widths of the columns, I've made the columns wider for all locales and limited the locale-specific adjustments to font-size only.

@flod: Should the list of affected locales be expanded to that added in PR #1193?
Maybe we should use the smaller font sizes by default and only use a larger size for en-US (or any other locales we know for sure have short strings)?