Ref T220, renamed some main window / widget functions

Make clearer if dealing with a window or widget

src/swiftlauncher/swiftlauncher.cpp

@@ -157,7 +157,7 @@ void CSwiftLauncher::mousePressEvent(QMouseEvent *event)
 
 void CSwiftLauncher::init()
 {
-    sGui->initMainApplicationWindow(this);
+    sGui->initMainApplicationWidget(this);
 
     m_mwaOverlayFrame = ui->fr_SwiftLauncherMain;
     m_mwaStatusBar = nullptr;

src/swiftlauncher/swiftlauncher.h

@@ -33,6 +33,7 @@ namespace BlackGui { namespace Components { class CConfigurationWizard; }}
  * \note Besides the fact the launcher makes it easy to start our applications it also pre-fetches some
  *       cache files, hence reducing load times in the subsequent applications. Therefor starting via the launcher
  *       is preferable, but not mandatory.
+ * \fixme it was better if launcher was a QMainWindow, because we have to deal with main widgets QDialog and QMainWindow because of launcher
  */
 class CSwiftLauncher :
     public QDialog,