Reorganize rel='noopener'

[luixxiul]

Follow-up to #10290

Also:

• Add rel='noopener' to brave.com (as the site also may be hacked, which of course should not happen)
• Fix a typo on https://github.com/brave/browser-laptop/pull/10290/files#diff-53c54a977fb4fffd2f7da96ec29f0c71R18
• Always rel='noopener' first, target='_blank' second on the same line (to make it easy to search it with regex)

Auditors:

Test Plan:

1. Search your repo for target='_blank'
2. Make sure external anchor links with target='_blank' have rel='noopener'

Submitter Checklist:

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Ran git rebase -i to squash commits (if needed).
• Tagged reviewers and labelled the pull request as needed.

Test Plan:

Reviewer Checklist:

Tests

• Adequate test coverage exists to prevent regressions
• Tests should be independent and work correctly when run individually or as a suite ref
• New files have MPL2 license header

[codecov-io]

Codecov Report

Merging #10424 into master will decrease coverage by 0.01%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master   #10424      +/-   ##
==========================================
- Coverage   54.44%   54.43%   -0.02%     
==========================================
  Files         246      246              
  Lines       21365    21364       -1     
  Branches     3320     3320              
==========================================
- Hits        11633    11629       -4     
- Misses       9732     9735       +3

Flag	Coverage Δ
#unittest	54.43% <0%> (-0.02%)	⬇️

Impacted Files	Coverage Δ
...r/components/preferences/payment/enabledContent.js	93.22% <ø> (-0.23%)	⬇️
...pp/renderer/components/preferences/helpfulHints.js	100% <ø> (ø)	⬆️
app/renderer/components/preferences/paymentsTab.js	83.51% <ø> (ø)	⬆️
js/about/newTabComponents/footerInfo.js	60% <ø> (ø)	⬆️
...components/preferences/payment/bitcoinDashboard.js	21.46% <0%> (-0.38%)	⬇️

[bsclifton]

Nice changes- great find with the typo 😄

[luixxiul]

@bsclifton thanks for reviewing :-)