h1 headings can be created in wikitext but are discouraged. They
nevertheless appear in the corpus.
https://www.mediawiki.org/wiki/Help_talk:Formatting#Level_1
Bug: T359881
Follows-Up: I15eaf43c6750c76363ec804eda9b8ca6ec4709c2
Change-Id: I1caa6809e1be14f87c791faac852610a522d1c5e
The margin and font rules are being overriden in DiscussionsTools
using equal specificity. The correction to the load order in
ResourceLoader skin module in
I83ac918ad8807c65aab2cd1dd8d7d2cd34b512af will break this.
Bug: T354975
Bug: T357929
Change-Id: I15eaf43c6750c76363ec804eda9b8ca6ec4709c2
Add CSS to support new HTML markup for headings with section edit
links, which will soon be used by Parsoid page views (T269630)
and by the old parser (T13555). Keep the old rules to provide
temporary support for cached page HTML and emergency opt-outs,
as well as permanent support for plain headings on special pages
and in Parsoid edit mode HTML.
See documentation page for further explanation:
https://www.mediawiki.org/wiki/Heading_HTML_changes
Depends-On: I44587461582d648b56ef0c9c7ae0c322895c69c2
Bug: T13555
Bug: T269630
Change-Id: I62d7e8ad7d8f25d145ec1f33230d6043982aec1e
