Improve documentation for UI classes

src/qt/sendcoinsdialog.h

@@ -14,6 +14,7 @@ QT_BEGIN_NAMESPACE
 class QUrl;
 QT_END_NAMESPACE
 
+/** Dialog for sending bitcoins */
 class SendCoinsDialog : public QDialog
 {
     Q_OBJECT
@@ -24,8 +25,8 @@ public:
 
     void setModel(WalletModel *model);
 
-    // Qt messes up the tab chain by default in some cases (issue http://bugreports.qt.nokia.com/browse/QTBUG-10907)
-    // Hence we have to set it up manually
+    /** Set up the tab chain manually, as Qt messes up the tab chain by default in some cases (issue http://bugreports.qt.nokia.com/browse/QTBUG-10907).
+     */
     QWidget *setupTabChain(QWidget *prev);
 
     void pasteEntry(const SendCoinsRecipient &rv);