Rename a lot of files

* about_dialog -> AboutDialog
* bb_editor -> BBEditor
* export_project_dialog -> ExportProjectDialog
* setup_dialog -> SetupDialog
* string_pair_drag -> StringPairDrag

include/AboutDialog.h

@@ -1,5 +1,5 @@
 /*
- * about_dialog.h - declaration of class aboutDialog
+ * AboutDialog.h - declaration of class aboutDialog
  *
  * Copyright (c) 2004-2008 Tobias Doerffel <tobydox/at/users.sourceforge.net>
  *

include/BBEditor.h

@@ -1,5 +1,5 @@
 /*
- * bb_editor.h - view-component of BB-Editor
+ * BBEditor.h - view-component of BB-Editor
  *
  * Copyright (c) 2004-2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
  * 

include/ExportProjectDialog.h

@@ -1,5 +1,5 @@
 /*
- * export_project_dialog.h - declaration of class exportProjectDialog which is
+ * ExportProjectDialog.h - declaration of class exportProjectDialog which is
  *                           responsible for exporting project
  *
  * Copyright (c) 2004-2012 Tobias Doerffel <tobydox/at/users.sourceforge.net>

include/SetupDialog.h

@@ -1,5 +1,5 @@
 /*
- * setup_dialog.h - dialog for setting up LMMS
+ * SetupDialog.h - dialog for setting up LMMS
  *
  * Copyright (c) 2005-2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
  *

include/StringPairDrag.h

@@ -1,5 +1,5 @@
 /*
- * string_pair_drag.h - class stringPairDrag which provides general support
+ * StringPairDrag.h - class stringPairDrag which provides general support
  *                      for drag'n'drop of string-pairs
  *
  * Copyright (c) 2005-2007 Tobias Doerffel <tobydox/at/users.sourceforge.net>