Make method naming more consistent.

* Use id() for methods returning a string used to represent
    some type of object.
  * Use displayName() for strings that are meant to be user
    visible.
  * Quieten some warnings while touching the files anyway.
  * Move Factories to their products in the plugins where that
    was not done before.

Reviewed-by: dt

src/plugins/qt4projectmanager/profileeditor.cpp

@@ -72,9 +72,9 @@ Core::IEditor *ProFileEditorEditable::duplicate(QWidget *parent)
     return ret->editableInterface();
 }
 
-const char *ProFileEditorEditable::kind() const
+QString ProFileEditorEditable::id() const
 {
-    return Qt4ProjectManager::Constants::PROFILE_EDITOR;
+    return QLatin1String(Qt4ProjectManager::Constants::PROFILE_EDITOR_ID);
 }
 
 //