Label external non federal links on the 18F Methods site

[bpdesigns]

Background
Agency websites must clearly state that the content of external links to non-federal agency websites is not endorsed by the federal government and is not subject to federal information quality, privacy, security, and related guidelines.

• Any link that is not a federal .gov or .mil website is considered an external link. - - Websites that are .gov but are not Federal is considered an external

Required by: OMB M-17-06, Policies for Federal Agency Public Websites and Digital Services (PDF, 1.2 MB, 18 pages, November 2016)

Suggested icon approach: use the launch icon from the USWDS icons for external links. Based on a search for 'external link' on the Noun Project, it seems like pretty common usage.

Acceptance criteria
-[ ] All links in the 18F Methods site that are not a federal .gov or .mil website are clearly indicated

Tasks

• Review 18F Methods site for external links that will be retained and add icon & text indicate non federal links

Definition of done

• One of the POs has approved the change
• Outreach approval (if needed)

[claireb-gsa]

For the record, Digital.gov's guidance is easier to parse than the OMB PDF - https://digital.gov/resources/required-web-content-and-links/#external-links

[kmori]

With this definition, would internal Google docs be considered "external" since they are not .gov or .mil?

[bpdesigns]

Great question @kmori - @MelissaBraxton do you remember how google docs were considered here?

[MelissaBraxton]

I think we can close this issue. We have #340 to cover the Gdocs styling, and all external links have already been updated.