Merge pull request #83 from k4rl85/loggin_client

Aggiunto logger a client_daemon
Fixes argparse implementation bugged from pull request #83.
Merge pull request #86 from k4rl85/fix_client_daemon_start

Fixes argparse implementation bugged from pull request #83.
Fixes test environment clean bug in TestClientDaemonConfig and TestDaemonCmdManagerConnection.
Merge pull request #87 from k4rl85/fix_clean_environment_for_test

Fixes test environment clean.
Adds return value to client_cmdmanager methods.
Improves connection_manager tests.
Improves SkipObserver.
Changes FileFakeEvent to simulate events with no dest_path.
Adds FakeEventQueue to test SkipObserver.
Explicit in FIleFakeEvent creation its arguments
Change requirements.txt to have 2 different files for dev and not dev.
Creates SkipObserver tests.