improvements to parser functions on the way to support the cite extensions.
Preparation for generic template and template arg in attribute support. 222
parser tests now passing.
page like this:
cd extensions/VisualEditor/modules/parser
echo '{{:Main Page}}' | node parse.js
echo '{{:Main Page}}' | node parse.js --html
echo '{{:Main Page}}' | node parse.js --debug
Even the date-based includes work somewhat, although they don't yet accept
passed-in dates.
