ERROR instead of INFO

fixes #2132
Made a nicer message

With a little clarification: if voms returned an actual error, then there is a real problem. If it's just because voms-proxy-init isn't present, then only show the notice.
Fixed res -> result

Also conventions.
Check existence of voms-proxy- commands

And return S_ERROR if they aren't there.
explicit handling of missing voms-proxy-XX cmds
Typo!
FIX: take into account the max number of files per FTS job (was not
present!)
FIX: add bringOnline timeout option if needed
FIX: protect computation of Completeness against division by 0
just inheriting from object
Moved old integration tests to TestDIRAC
Moved JobWrapper file creation in Utilities code, mainly for better
testing
Dealing with extraOptions from the pilot
typo
The records will be resent in case of failure
Simplifications
just comments
Removed old synchronizer
Just comments
Adding ftsEndpointDefaultLocation
Prepare for getting staging time from FTS3
Use real transfer time for accounting