Note this actually changes the "subtle" color to be darker. As far
as I understand this is an intentional decision. The old color token
from OOUI is deprecated and intentionally made darker in Codex.
See Ie667c35 and most notably T313502.
Change-Id: I37ad25aa6821d61fe3321e1390d1ccf987075250
Significant change is that footnote marker numbers are changed from
being a CSS-rendered marker to using the rendered "fallback" text.
This could be avoided using the same trick as is implemented for the
reflist: send an inline style variable with the marker content; but
let's only do this if really necessary for user experience.
Template-produced refs are still wrong, but this patch continues to
render them as they come from Parsoid, in the content script.
TODO in later patches:
* reuse of a subref is rendered as '3.2.1' in reader view but '3.0'
and '3.1' in the editor.
* subref numbering is backwards in RTL languages
Bug: T247921
Change-Id: Ieff73769f8ebbc3724f6a9b498487c4e7d09aa2e
