Default qtlogging.ini file is copied if it doesn't exist
Use correct parameter list request api
Removed UAS::requestParameters method

This removes confusion as to whether you call UAS::requestParameters
(incorrect) or QGCUASParamManager::requestParameterList (correct) from
client code.
Sends it's own param_request_list message instead of calling us

Also added/converted some logging to debug the problem caused by the
two parameter request apis.
Merge pull request #1085 from DonLakeFlyer/QLoggingCategory

Better QLoggingCategory support, fixed parameter list request