* Load correct JS for the active Bootstrap version
* Tidy up bootstrapVersion declaration
* Add Bootstrap JS to website redesign layout
* FIx error on interstitial subscriptions page
* Remove unnecessary import of jQuery and Bootstrap
* Use global entrypointScripts in bootstrap-js mixin
GitOrigin-RevId: 6b1977354a72dc69008fc0d2e3baec2f28d97f6b