Setting icon size for folder navigation widget.

Thus icons are displayed in a uniform size and don't waste too much space.

Task-number: QTCREATORBUG-1539

src/plugins/projectexplorer/foldernavigationwidget.cpp

@@ -45,6 +45,7 @@
 
 #include <QtCore/QDebug>
 #include <QtCore/QProcess>
+#include <QtCore/QSize>
 #include <QtGui/QFileSystemModel>
 #include <QtGui/QVBoxLayout>
 #include <QtGui/QToolButton>
@@ -143,6 +144,7 @@ FolderNavigationWidget::FolderNavigationWidget(QWidget *parent)
 #endif
     m_fileSystemModel->setFilter(filters);
     m_filterModel->setSourceModel(m_fileSystemModel);
+    m_listView->setIconSize(QSize(16,16));
     m_listView->setModel(m_filterModel);
     m_listView->setFrameStyle(QFrame::NoFrame);
     m_listView->setAttribute(Qt::WA_MacShowFocusRect, false);