Currently, a sha256 hash of local_ntp.js is listed in both local_ntp_source.cc and in local_ntp.html. This makes development quite inconvenient - every time the js is changed, both places have to be updated. It'd be better to automatically update/insert this value during the build process.

Ideas for how to do this: For the .cc, we could generate a header that contains a #define with the value. For the .html, we could either insert it manually (like we already do for "{{CONFIG_INTEGRITY}}"), or we could (ab)use "$i18n{}".