Fixes #4424 - Permit to copy file from remote host
Refs #4424 - Add forgotten class 'is_file'
Refs #4424 - Change test of local cp to know if the source/destination is a file or a source and add an acceptance test
Refs #4424 - Fix acceptance test and change test to know if the source/destination
Refs #4424 - Prevent reporting to send 2 differents reports for directory copies and rework space format
Merge pull request #35 from nperron/bug_4424/dev/permit_to_copy_file_from_remote

Fixes #4424 - Permit to copy file from remote host