- Updated editor, and other area, styles to look okay in dark mode.
- Used tinyMCE theme generator to create dark mode theme.
- Updated tinymce to latest 4x version.
- Most elements done, but still need to do editors, tables and final
pass.
- Toggled only by quick js check at the moment, checking via css media
query. Need to make into user-preference toggle.
For #1234
Optionally we could consider removing the rule at line 274. This doesn't handle multiple layers of nested lists and would be better covered by the generic rule which checks for an `ol` or `ul` nested inside a `li` which is how MarkDown renders nested lists as HTML.
- Removed different PDF template used on pages.
- Updated export view files to have the intended format passed.
- Shared the export CSS amoung the export templates.
Should hopefully address #1886
- MDN theme appeared fairly bad for markdown use, and the geometric
background was a bit much. Swapped out to default theme.
- Rough-added stickiness to docs sidebar, will need more work once it
starts to expand possible screen height.
- Applied since the browser defaults caused outlines to appear very
large in some cases.
- Set default color to use app primary color, to help them blend into
the design a little.
For #1738
