* For the proof of concept, VE will be used to write comments
with no fallback.
* Parsoid will be required for parsing pages
At some point in the future we may have a non-VE comment widget
fallback and Parsoid may be part of core, in which case we can
re-evaluate this hard dependency.
Change-Id: Ib694f2a4b2a640bb29b564056d9279e53fff6c9c