Code blocks in tinymce could sometimes end up exploded into the sub
elements of the codemirror display.
This changes the strategy to render codemirror within the shadow dom of
a custom element while preserving the normal pre/code DOM structure.
Still a little instability when moving/adding code blocks within details
blocks but much harder to break things now.
- Ensures padding works across FF & Chrome, was only working on FF
before.
- Fixes sketchy editor positioning focus on FF, since tinyMCE would
add a hidden element to the bottom of the body which would remove/add
our body padding causing unstable positioning.
- Removed old 'editor-*-update' commands to instead use the aligned
'editor::replace' command that we already have.
- Changed the way custom styles are loaded for the WYSIWYG editor so we
don't need an API call but instead scape content from the parent page
header using comments as identifiers. Added tests to ensure comments
exist and align.
- To display license info along with shortcuts.
- Extracted out plain layout from 503 error page.
- Added tests to ensure license references are as expected.
- Split everything into specific plugin/concern files to make things
more managable. Means original component file is now simple and much
of the core config is focused in one place.
