notifications added, some fixes

src/notifications.py

@@ -0,0 +1,10 @@
+from PySide import QtGui, QtCore
+# TODO: add sound notifications
+
+
+def tray_notification(title, text):
+    if QtGui.QSystemTrayIcon.isSystemTrayAvailable():
+        tray = QtGui.QSystemTrayIcon()
+        tray.setContextMenu(QtGui.QMenu())
+        tray.show()
+        tray.showMessage(title, text)