Fixed regression that made non commented code lack a scroll bar

Because bulk highlights get analyzed per comment,  codeContainers
without comments got forgotten.
More specific .codeContainer

Updated the prism api call to use the passed in env to detect which
codeContainer is actually relevant.
The correct lines are highlighted

Syntax errors were getting in my way.  Also, the range edge case needed
to be handled
Decoupled bolding commented lines

Also put the star first.

Font weight 900 is the most bold that something can be.  The color is a
bit darker and adds a nice pop!
Fixed OBO