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Outdated bootstrap markup
Bootstrap5 needs explicit spacing between form rows
Avoid double-negatives in options
Upgrade Bootstrap from 4 to 5. Fixes: #3673. Fixes: #3400.
Prefer https for links to documentation
Fix: search/replace not matching anything
Replace batch-update with data-fix modules. Add data-fix for _PRIM tags. Fixes: #1354, Fixes: #1370, Fixes: #1386, Fixes: #2931