Small improvement to grunt config
Whitespace beautification
Uglify options for easier JS debugging (dev mode)
Consolidate CSS in zapi.js (out of iframe html)
bug: Tighten/strengthen ref URL removal logic

Using the text “. Retrieved” to find the URL in the reference was not
reliable. Improved the logic to be more specific and careful, and to
only execute the string removal if it succeeded.
Comment cleanup
New compiled JS