Widgets ignore language setting

[bisqwit]

The widgets contain a link to .js file that ignores the user’s language setting.

For instance, this is screenshot from the Finnish site (fi.liberapay.com). It lets the user believe the box will be localized in Finnish language, but it will not, because the link takes to the un-localized version of the site.

Either the link should be changed, or the example widget output should be changed to use whichever language liberapay.com (without language prefix) uses, or there should be additional text explaining this.