Consolidate project.clj definitions

Now that the JVM server will be removed per https://github.com/comamitc/pretty-print.net/pull/34, I will be able to combine the project.clj files into one root level configuration similar to: https://github.com/comamitc/cljs-proj/blob/master/project.clj.

In addition, we should look to manage my node dependencies via lein-npm instead of a separate package.json definition.

So the action items are:

[x] Combine client and server project.clj files into one root level config
[x] Move node dependencies to project.clj using `lein-npm
[x] Use figwheel to drive dev workflow instead of several different node dev-servers that are currently needed. (this will probably include removing grunt in favor of other lein plugins as well)

comamitc / pretty-print.net