added comments, removed unused functions

modules/base/config.py

modules/cli_tool/padavan.py

modules/communication/connection_tester.py

modules/communication/liquidsoap/client.py

modules/communication/liquidsoap/communicator.py

modules/communication/liquidsoap/initthread.py

modules/communication/liquidsoap/playerclient.py

modules/communication/liquidsoap/recorderclient.py

modules/communication/mail/mail.py

modules/communication/redis/adapter.py

modules/communication/redis/messenger.py

modules/monitoring/diskspace_watcher.py

modules/scheduling/calendar.py

modules/scheduling/scheduler.py