ExpandingInfoboxes

ExpandingInfoboxes expands infoboxes at wider widths.
== ==
== What's changing ==
* The minimum infobox width is set to 300px, which is the original minimum width for the retired Europa theming. (Site default width is 270px.)
* It can expand to up to 450px width. The article area needs to be wider than 1,285px for max width. This is typically when the right rail is collapsed and the article page is expanded.
* Data label minimum is 95px and can expand to 105px. (Site default is about 80px.)
* Data value minimum is 175px and can expand to fill the rest of the available width (about 316px). (Site default is about 161px).