The data already provided by SkinMustache makes the existing
Minerva code redundant.
* html-after-content functionality equivalent to dataAfterContent value
* Rename license and last modified to have html-minerva prefixes and promote
to top level data object. This allows us to distingusih Minerva values from core
values.
Note: previously the logo used srcset to ship a 1x logo but these
were dropped during the desktop improvements work.
Bug: T256083
Change-Id: I7b2cd5181eae67b345f6686e3389a76a12e3b1a1
