Kicad manager: create a minimal .kicad_pro file when creating a project from scratch.

Fixes #4889
https://gitlab.com/kicad/code/kicad/issues/4889

eeschema/erc_item.cpp

@@ -1,7 +1,7 @@
 /*
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
- * Copyright (C) 2020 KiCad Developers, see change_log.txt for contributors.
+ * Copyright (C) 2020 KiCad Developers, see AUTHORS.txt for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -78,7 +78,7 @@ ERC_ITEM ERC_ITEM::globalLabelDangling( ERCE_GLOBLABEL,
         wxT( "global_label_dangling" ) );
 
 ERC_ITEM ERC_ITEM::similarLabels( ERCE_SIMILAR_LABELS,
-        _( "Labels are similar (lower/upper case difference only) "),
+        _( "Labels are similar (lower/upper case difference only)"),
         wxT( "similar_labels" ) );
 
 ERC_ITEM ERC_ITEM::differentUnitFootprint( ERCE_DIFFERENT_UNIT_FP,

kicad/kicad_manager_frame.cpp

@@ -413,7 +413,11 @@ void KICAD_MANAGER_FRAME::CreateNewProject( const wxFileName& aProjectFileName )
             if( !wxFileName::FileExists( srcFileName )
                 || !wxCopyFile( srcFileName, destFileName.GetFullPath() ) )
             {
-                Pgm().GetSettingsManager().SaveProject();
+                wxFile file( destFileName.GetFullPath(), wxFile::write );
+
+                if( file.IsOpened() )
+                    file.Write( wxT( "{\n}\n") );
+                // wxFile dtor will close the file
             }
         }
     }