Use NPM webjar for datalist-polyfill, as Webjars' "bowergithub" version is broken (missing version number in path causes sanity checks in WebjarsServlet to refuse to serve the file).
<!-- Polyfill for <datalist> element support -->
<dependency>
- <groupId>org.webjars.bowergithub.mfranzke</groupId>
+ <groupId>org.webjars.npm</groupId>
<artifactId>datalist-polyfill</artifactId>
<version>1.14.0</version>
<scope>runtime</scope>
