Refactored for new storm-contrib submodule structure

Edited pom to use storm-mongo instead of storm-contrib-mongo to
match package structure.
Moved packages from storm.contrib.mongo to storm.mongo.
Updates for new latest Storm APIS.

Using BaseRichBolt and BaseRichSpout instead of IRich....
Merge pull request #1 from ilionblaze/development

Refactoring and updating