add markdown and markup to ZKConnectionManager

RB=252070
a=dhoa
bump pegasus to 1.13.1
RB=254498
Refactor the way that projections are delt with in the URI.
Move URI encoding of the "fields" query param to occur during the normal URI building process.

RB=254542
R=kparikh,si-dev,jbetz,kjin,nshankar,gogenc
A=gogenc,jbetz
Changing Changelog for projection/fields changes.
Include schemas referenced inline when generating OPTIONS responses.
Add support for dynamically constructing example URIs and requests replacing usage of DataTemplateUtil.getSchema in client with schemas that are passed in from ResourceSpec.

RB=253628
R=gogenc,kjin,kparikh,ksobolev,mtagle,nshankar
A=gogenc