Revert ParameterEditor to QtQuick.Controls 1.x

custom-example/src/CustomPlugin.cc

@@ -6,7 +6,7 @@
  * COPYING.md in the root of the source code directory.
  *
  *   @brief Custom QGCCorePlugin Implementation
- *   @author Gus Grubba <gus@custom.com>
+ *   @author Gus Grubba <gus@auterion.com>
  */
 
 #include <QtQml>

src/QmlControls/ParameterEditor.qml

@@ -7,10 +7,10 @@
  *
  ****************************************************************************/
 
-import QtQuick                      2.11
-import QtQuick.Controls             2.4
+import QtQuick                      2.3
+import QtQuick.Controls             1.2
 import QtQuick.Dialogs              1.2
-import QtQuick.Layouts              1.11
+import QtQuick.Layouts              1.2
 
 import QGroundControl               1.0
 import QGroundControl.Controls      1.0