Issue #1959000 by rupl and echoz: Remove hgroup because it's being dropped from the HTML5 spec.
Revert "Remove hgroup as it's being dropped from the HTML5 spec." To add issue reference and credit to commit message. This reverts commit 307f1e14f737c51dec334f0514bf3b59a7c31ecc.
Regenerate CSS.
Remove hgroup as it's being dropped from the HTML5 spec.
Keep form elements constrained in their containers.
Jedi magic.
Update CHANGELOG.
Issue #1931724: Override default panels and panels_everywhere templates
Next I'll be writing <div classes_array='stuff'>. Guh.
