fix target=_blank phishing vulnerability

[Ed McDonagh]

Links with "target=_blank" should prevent phishing attacks

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[Ed McDonagh]

Attempting to close phishing vuln, hopefully improving security rating on sonarcloud. Refs #843

→ <<cset 3c661de7a641>>

[Ed McDonagh]

Missed two. Refs #843

→ <<cset 9c891ff6aa50>>

[Ed McDonagh]

Merged in issue843blankphishing (pull request #380)

Attempting to close phishing vuln, hopefully improving security rating on sonarcloud.

Fixes #843 hopefully, seems sonarcloud only tells you about the changed code, not the project with that code in.

→ <<cset b58451447849>>