A pet peeve of mine for years has been that inline code would style

differently between CodeMirror (edit mode) and rendered Markdown. The

edit mode style was just a sort of metalic purple text. The rendered

style was red, with a faint background and border.
This change makes the styles consistent between the two, choosing the

rendered mode. There's now a 1-to-1 pixel mapping between the two, with

the exception that in edit mode, the backticks are visible.

Tested in Chrome and Firefox. Swapped between edit and render modes, and

saw they were consistent.