Print styles: Wrap CSS-generated URLs

Print styles: Wrap CSS-generated URLs

Chrome does not actually break CSS-generated URL content with word-wrap, which
causes some infoboxes to expand to the entire page.

This patch adds the word-break CSS property, which allows Chrome to break
those URLs at any position. This fixes the rendering of infoboxes on pages
like https://en.wikipedia.org/wiki/San_Francisco.

With basically all PDF generators (including browsers) including clickable
links & many PDFs consumed on-screen it might be worth considering making
print URLs optional at some point, and defaulting to "screen optimized" PDFs.

Change-Id: I8d03032a553643198da6a1dd8b78201a9255fcbb