Replace .js in gwt-editor,zanata-war with webjars

Instead of embedding third-party .js files in our source tree (where they are invisible to tools like versioneye and maven-dependency-plugin), we should replace them with references to the corresponding webjars: http://www.webjars.org/

• codemirror

• diff-match-patch

• JavaScript-Templates

• jQuery-File-Upload

• crossroads

• jquery-typing

• js-signals

(Found with this:

)

It should be easy to add new webjars if required.

We could also replace jsf-ajax-viewstate-fix.js with a bit of omnifaces:

• https://stackoverflow.com/a/11412138/14379