OTHER: Make the settingsdialog emit a settingsChanged Signal

It's now no longer necessary to restart promoe for new settings to take effect.
The Signal is piped through Application.
Updated the classes that are affected by settings changes
Removed some now unused code from XMMSHandler

src/playlist/playlistview.cpp

@@ -18,6 +18,7 @@
 #include "XMMSHandler.h"
 #include "xplayback.h"
 
+#include "application.h"
 #include "playlistview.h"
 #include "playlistmodel.h"
 #include "playlistwidget.h"
@@ -137,8 +138,8 @@ PlaylistView::PlaylistView (QWidget *parent) : QListView (parent)
 
 	XMMSHandler &xmmsh = XMMSHandler::getInstance ();
 
-	connect (&xmmsh, SIGNAL(settingsSaved()),
-	         this, SLOT(settingsSaved()));
+	connect (qApp, SIGNAL (settingsChanged ()),
+	         this, SLOT (settingsChanged ()));
 
 	connect (xmmsh.xplayback (), SIGNAL(playbackStatusChanged(Xmms::Playback::Status)),
 	         this, SLOT(handleStatus(Xmms::Playback::Status)));
@@ -219,7 +220,7 @@ PlaylistView::handleStatus (const Xmms::Playback::Status st)
 }
 
 void
-PlaylistView::settingsSaved ()
+PlaylistView::settingsChanged ()
 {
 	QSettings s;
 	m_font->setPixelSize (s.value ("playlist/fontsize").toInt ());