See https://www.netlify.com/blog/2017/07/18/http/2-server-push-on-netlify/
```
▶ nghttp -ans https://deploy-preview-83--gohugoio.netlify.com/
***** Statistics *****
Request timing:
responseEnd: the time when last byte of response was received
relative to connectEnd
requestStart: the time just before first byte of request was sent
relative to connectEnd. If '*' is shown, this was
pushed by server.
process: responseEnd - requestStart
code: HTTP status code
size: number of bytes received as response body without
inflation.
URI: request URI
see http://www.w3.org/TR/resource-timing/#processing-model
sorted by 'complete'
id responseEnd requestStart process code size request path
13 +199.52ms +1.22ms 198.30ms 200 42K /
4 +404.60ms * +69.97ms 334.62ms 200 102K /dist/main.css
2 +484.93ms * +69.63ms 415.30ms 200 131K /dist/app.bundle.js
```
Compare that to the live site:
```
▶ nghttp -ans https://gohugo.io/
***** Statistics *****
Request timing:
responseEnd: the time when last byte of response was received
relative to connectEnd
requestStart: the time just before first byte of request was sent
relative to connectEnd. If '*' is shown, this was
pushed by server.
process: responseEnd - requestStart
code: HTTP status code
size: number of bytes received as response body without
inflation.
URI: request URI
see http://www.w3.org/TR/resource-timing/#processing-model
sorted by 'complete'
id responseEnd requestStart process code size request path
13 +596.97ms +2.54ms 594.43ms 200 42K /
15 +606.87ms +403.50ms 203.37ms 200 15K /files/muli-latin-200.woff2
2`1 +790.39ms +403.51ms 386.88ms 200 20K /dist/main.css
23 +1.14s +596.00ms 544.48ms 200 42K /dist/app.bundle.js
19 +1.14s +403.50ms 737.99ms 200 15K /files/muli-latin-800.woff2
17 +1.14s +403.50ms 738.01ms 200 15K /files/muli-latin-400.woff2
```
Assets like screenshots are used in content files such as
tutorials. This commit moves these assets out of the theme
into the static folder in the root directory.
This way the theme and content files become independent from
each other.
See PR rdwatters/hugo-docs-concept#123
Bjørn Erik Pedersen