Redesign of CCW applicative architecture.

- paredit.clj, ccw.debug, ccw.leiningen transformed in plugin fragments
- projects ccw.clojure, ccw.clojure-contrib, clojure.osgi removed
- dependended on bundles for nrepl and contrib.incubator removed
- project.clj added to ccw.core with a plugin to help install deps in
  ccw.core/lib/ directory.