When building the dist file, put the 'local' plugin under 'plugins'
Switch the way plugin layouts are pulled in.  Avoid the need to hard-code the plugin name
JSON module should be pulled in to dump diagnostics
Modify the launcher to configure Jetty to serve out assets from any plugin's directory
Fix handling of controller paths to work under the launcher
Merge pull request #577 from hudmol/more-plugin-changes

More plugin changes