Use template-literal instead of EJS

[Drulac]

Template Literal is fastest, smallest and simplest template engine, because it use JS's literal template feature.

It's 55 times faster than EJS, and it also use less CPU and RAM ressources, so it may be a good idea to use it instead of EJS 😀

[hash-bang]

Noted but EJS is really just rendering a one-off HTML page in this instance.

I'll add this to the todo list the next time I visit the internals.