Fixing mis-named functions and variables.

Apparently as of April 2012 I was still getting GeoNetwork and GeoServer confused.
Updating logging level of client cancelled download
Merge branch 'master' into incorrect_zip_extension_in_download
Removed special handling for files attached to metadata records.

GeoNetwork used to serve attached files in a zip archive hence this special handling. That seems to have changed now. When this download code is refactored we might need to review this decision.

 Apparently the existing tests didn't check this behaviour. Given that it needs a refactor next iteration I did not add a test for this
Adding comment explaining when ClientAbortException is thrown
Changing whitespace to be consistent
Merge pull request #380 from aodn/issue-332

Fix for issue #332