update ChangeLog

update CmakeLists
update PKGBUILDs
fix GUI building

sources/plasmoid-kf5/plugin/netctl.h

@@ -30,6 +30,7 @@ class NetctlPlugin : public QQmlExtensionPlugin
     Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QQmlExtensionInterface")
 
 public:
+    void initializeEngine(QQmlEngine *engine, const char *uri);
     void registerTypes(const char *uri);
 };