Make a Seco Bundle pluggable into OSGi systems

[bolerio]

This could be useful for any larger scale application build on OSGi that wants to integrate a scripting tool into the application for interacting with its internals. A great example of this is Protege with all its other plugins. Instead of trying to integrate protege into Seco to work with ontology, it should be possible to have a Seco canvas available in Protege and all of Protege's internals exposed,access to the currently loaded ontology via OWLAPI etc., with any scripting language.