cleanup: better project hierarchy

- adapt file names to match our convention
- sort code in subgroups (no more Sources and Headers groups)

Refs #71037

Change-Id: I585b85b9ba8f86407efc9127f29010117b5ee674
diff --git a/src/ConversationsVC.h b/src/ConversationsVC.h
new file mode 100644
index 0000000..af8843d
--- /dev/null
+++ b/src/ConversationsVC.h
@@ -0,0 +1,42 @@
+/*
+ *  Copyright (C) 2004-2015 Savoir-Faire Linux Inc.
+ *  Author: Alexandre Lision <alexandre.lision@savoirfairelinux.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.
+ *
+ *  Additional permission under GNU GPL version 3 section 7:
+ *
+ *  If you modify this program, or any covered work, by linking or
+ *  combining it with the OpenSSL project's OpenSSL library (or a
+ *  modified version of that library), containing parts covered by the
+ *  terms of the OpenSSL or SSLeay licenses, Savoir-Faire Linux Inc.
+ *  grants you additional permission to convey the resulting work.
+ *  Corresponding Source for a non-source form of such a combination
+ *  shall include the source code for the parts of OpenSSL used as well
+ *  as that of the covered work.
+ */
+#ifndef CONVERSATIONSVC_H
+#define CONVERSATIONSVC_H
+
+#import <Cocoa/Cocoa.h>
+#import "QNSTreeController.h"
+
+@interface ConversationsVC : NSViewController <NSOutlineViewDelegate> {
+
+}
+
+@end
+
+#endif // CONVERSATIONSVC_H