Factorize some code in GridAccount

Set default font for everybody
Fix a bug in DateDelegate (bad month)
Fix a bug in GridAccount : Tab added for sub operations when saving
Fix a bug in GridAccount : credit was considered as a debit

src/view/wxUI.hpp

@@ -32,6 +32,8 @@ class ImportEngine;
 
 #include <controller/KissCount.hpp>
 
+#include "view.hpp"
+
 #include <qtranslator.h>
 #include <qtextcodec.h>
 
@@ -101,7 +103,11 @@ public:
         _kiss(kiss), 
         _wxUI(parent),
         _KissButton(0)
-    {hide();}
+    {
+	DEFAULT_FONT(font);
+	hide();
+	setFont(font);
+    }
 
     virtual void OnShow()=0;
     virtual KissPanel* CreatePanel()=0;