Speed up contentviews - Githubissues

Based on the logs, most time is currently spent on rendering the JS and CSS content views using jsbeautifier. This makes the conversion process take a whole lot of time.

[ ] Replace JS contentview (https://github.com/mitmproxy/mitmproxy/pull/2537)
[ ] Replace CSS contentview (https://github.com/mitmproxy/mitmproxy/pull/2542)

mitmproxy / share.mitmproxy.org

Speed up contentviews #5