Formatted.
Added extra debug logging for conversion and filtering to get insight
into problems with hyper-authors.
Made sure activities use filtered cache.
Changed so that visibility filter does not traverse the work
contributors, for better performance with hyper-authors.
Merge branch 'extraDebugLogging' into fixPublicProfileCachingPlusDebugLogging

Conflicts:
	orcid-core/src/main/java/org/orcid/core/security/visibility/filter/impl/VisibilityFilterImpl.java
Fixed npe in extra debug logging.
Merge pull request #825 from ORCID/fixPublicProfileCachingPlusDebugLogging

Fix public profile caching plus debug logging