Europe C2 is now retired, I have added new severs for testing purposes.
C2 will be kept as test case for failing connects.
Remarks: Is will be saved in the settings in the future.
But we have no persistence for objects yet.
* rename CStatusMessages to CStatusMessageList
* rename NetworkVatlib to CNetworkVatlib
* replace all occurrences of Realname with RealName (correct camel case)
* CSequence method corresponding to CList::append is push_back
* don't compile the qdbuscpp2xml metadata plugin by default
* CAircraftIcao string members always trimmed and capitalized
* added CComSystem::roundTo25KHz
* using epsilon comparison in a couple of places
refs #81