Recommend enabling UPnP on network problems

- it looks like there aren't enough listening nodes
- if connection is dropped, notify non-proxy users about the UPnP option

src/bitmessageqt/__init__.py

@@ -1667,6 +1667,11 @@ class MyForm(settingsmixin.SMainWindow):
                 self.notifierShow('Bitmessage', unicode(_translate(
                             "MainWindow", "Connection lost").toUtf8(),'utf-8'),
                                   self.SOUND_DISCONNECTED, None)
+            if self.connected and \
+                not BMConfigParser().safeGetBoolean('bitmessagesettings', 'upnp') and \
+                BMConfigParser().get('bitmessagesettings', 'socksproxytype') != "none":
+                self.statusBar().showMessage(_translate(
+                    "MainWindow", "Problems connecting? Try enabling UPnP in the Network Settings"), 10000)
             self.connected = False
 
             if self.actionStatus is not None:

src/bitmessageqt/networkstatus.py

@@ -116,7 +116,7 @@ class NetworkStatus(QtGui.QWidget, RetranslateMixin):
             "networkstatus", "Total Connections: %1").arg(str(len(shared.connectedHostsList))))
         if len(shared.connectedHostsList) > 0 and shared.statusIconColor == 'red':  # FYI: The 'singlelistener' thread sets the icon color to green when it receives an incoming connection, meaning that the user's firewall is configured correctly.
             self.window().setStatusIcon('yellow')
-        elif len(shared.connectedHostsList) == 0:
+        elif len(shared.connectedHostsList) == 0 and shared.statusIconColor != 'red':
             self.window().setStatusIcon('red')
 
     # timer driven