GitLab

1) No change to "Additional Resources" or "Inspecting & Tweaking" labels in fatnav
2) Renamed some of the favnav labels during the meeting
3) /devtools/docs/elements completely removed from chrome_sidenav.json so we shouldn't be able to get to it unless you go to the direct url
4) /devtools/docs/dom-and-styles added properly to chrome_sidenav.json

BUG=

Review URL: https://codereview.chromium.org/288573002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@271210 0039d316-1c4b-4281-b951-d872f2087c98