[maven-release-plugin] prepare for next development iteration
added cobertura code reporting to reports
fixed lazy loading in self-service, closes #571
made scope handling consistent for introspection services (now a space-separated string), closes #570
updated JPA and eclipselink to remove eclipselink repository dependency, closes #580
fixed icons on scope page
fix JS errors in scope management page
updated to even newer versions of eclipselink and JPA, closes #580 even harder
extracted JPA configuration, closes #569
fixed an incorrect name to one of the fields in the underlying model causing errors once a user logs in.
a fix for a NullPointerException whenever a client requests a client scope to be granted.
fixed subjectType typo, closes #579
Performance improvement of token cleanup:

an alternative token cleanup mechanism designed to maintain a very compact memory footprint while performing cleanup in consecutive runs of the cleanup thread. This serves to address OutOfMemoryException issues of the original token cleanup mechanism when process is under load. Also, added cleanup of the authentication_holder table.
fixed bad JPQL in auth holder cleanup class
simple cache for stats
updated stats service to have a resettable cache triggered by other service events
added stats mock to unit tests
configuration cleanup, closes #568
Added Getter/Setter for IntospectionAuthorityGranter.  Still defaults to SimpleIntrospectionAuthorityGranter
account for registration time in approval page, closes #550