activationkey: disable (unused) wildcard import warnings
activationkey: disable unused argument warnings
activationkey: disable invalid function name warnings
activationkey: removed / fixed unused variables
activationkey: single statement per line
activationkey: use xmlrpclib.Fault rather than general Exception
activationkey: use specific exceptions rather than bare except
activationkey: fix calling of list_base_channels() method
activationkey: avoid using dangerous value as default argument