Fixing an arity exception - some calls to the proxy classloader are
using the loadClass form that takes a 'resolve' boolean flag.

clojure.lang.ArityException: Wrong number of args (3) passed to: system$proxy-classloader$fn
Logging messages around firefox reloading.
Fix to sample.config.edn to align with change in keys namespace.
-- in documentation, adding jig/ namespace to :components key, as per this thread: https://groups.google.com/forum/#\!topic/clojure/E0BdR_AksiA
Fixed some typos