HTTP compression for static assets

[ledor473]

It seems that the files served by the /static route are not compressed.

The jaeger-ui files seems to be properly minified but they are still quite heavy:
/static/css/main.*.css --> ~600KB
/static/js/main.*.js --> ~1.8MB

[yurishkuro]

That's a great suggestion. Off top of my head I don't remember if Go's file server supports it.

[ledor473]

It seems that mux/handlers provides one and it's already part of the dependancies:
https://github.com/gorilla/handlers

We could probably wrap the whole mux.NewRouter() with the CompressHandler just like it's done by the RecoveryHandler.

I can send a pull request with that

[yurishkuro]

pull request will be most welcome