Added the generic bits of taverna3-commons

Remaining taverna-specific move into taverna-engine:

taverna-database-configuration-api
taverna-database-configuration-impl
taverna-services-api
taverna-services-impl
Updated POMs for taverna-osgi as parent
taverna-osgi-schemas
taverna-xml-schemas -> taverna-osgi-schemas
corrected parent
project.parent.version
project.parent.groupId
Apache Taverna in <name>
Axis instead of wsdl generic