NEXUS-5790: Return forceDelete

But keep away p-u and commons-io used.
NEXUS-5790: Nag if lock leak detected
NEXUS-5790: Doc's and remove dup code from RemoteIPFinder
NEXUS-5790: View support javadoc

And removal of render stuff
NEXUS-5790: Moved templates into package

To indicate their usage.
NEXUS-5790: when view is not found, report it

Tell the user which view is not found.
NEXUS-5790: Content-disposition