DMAP-45 - Prepare BrowserMap module for ASF releases

* separated build artifacts into source artifact and dist artitfact
* moved dependencies license information from NOTICE to LICENSE
* improved package.json description file
* provided rat.exclude file for checking source files

git-svn-id: https://svn.apache.org/repos/asf/incubator/devicemap/trunk/browsermap/trunk@1610949 13f79535-47bb-0310-9956-ffa450edef68