Devtools docs for Firefox 49 - can you help

[William Bamberg]

Hi dev-mdc

There are some Devtools features in Firefox 49 that need documentation. You
can see a list of them here:
https://tree.taiga.io/project/viya-mdn-durable-team/task/175.

If you have spare cycles, and would like to help improve the Devtools docs
for this release, I'd really appreciate it! I think the most important ones
are probably:

* "Show cause of a network request in netmonitor":
https://bugzilla.mozilla.org/show_bug.cgi?id=1134073
* "Expose animation performance information in DevTools":
https://bugzilla.mozilla.org/show_bug.cgi?id=1254408
* "Reorganize the inspector context menu":
https://bugzilla.mozilla.org/show_bug.cgi?id=1211613

A lot of the others are minor wording changes in the UI, but would still be
nice to have.

There is more info on these changes in this Hacks blog post:
https://hacks.mozilla.org/2016/06/developer-edition-49-network-request-stack-traces-and-more/
. Also please feel free to ask if you need any guidance with them.

Thanks!

Will