Add classes describing device characteristics to the
body of the current document at start-up. Refactor
device matchers out of the mct-device directive for
reuse and consistency here.
https://github.com/nasa/openmctweb/issues/169
When including/excluding a DOM element via mct-device,
use replaceWith() instead of parent().append() to preserve
original ordering of DOM elements from template.
nasa/openmctweb#213.
