Project cleaning and re-organizing

* separated main pom into smooks-parent pom and aggregator
* parent pom maintains most/all of dependency information - using dependency management all-round
* introduced aggregator pom for scribe sub-modules
* instroduced aggregator pom for cartridges
* using maven bundle plugin 2.4.0 to produce OSGi bundles
* bump commons-logging to 1.1.3
* bump junit version to 4.11
* added travis config