Dependency updates.
Profile meta data
Improvement to allow a file entity to be preserved on update instead of replaced.
Added comment on picture cascade.
Javadoc.
PF-606 Update to preserve the file entity information.
PF-606 Adding user profile example for use as an image cropping example as well.

Update picture file name to include extension.
Update to replace the data in the existing file name instead of always overwriting
the file with a new file of the same name. This allows other code to reference
the file by ID.