Correct node/pad count in pcbnew

Pads count all pads/pins on the board including unconnected and NPTH.
Nodes count only the pads that can connect to a net and are therefore
routable.  These were being calculated as the same number (displayed in
the info bar at the bottom of the screen)

pcbnew/class_board.cpp

@@ -1019,9 +1019,17 @@ int BOARD::GetNumSegmZone() const
 }
 
 
-unsigned BOARD::GetNodesCount() const
+unsigned BOARD::GetNodesCount()
 {
-    return m_connectivity->GetPadCount();
+    unsigned retval = 0;
+    for( auto mod : Modules() )
+    {
+        for( auto pad : mod->Pads() )
+            if( pad->GetNetCode() > 0 )
+                retval++;
+    }
+
+    return retval;
 }
 
 
@@ -2941,9 +2949,15 @@ const std::vector<D_PAD*> BOARD::GetPads()
 }
 
 
-unsigned BOARD::GetPadCount() const
+unsigned BOARD::GetPadCount()
 {
-    return m_connectivity->GetPadCount();
+    unsigned retval = 0;
+    for( auto mod : Modules() )
+    {
+        retval += mod->Pads().Size();
+    }
+
+    return retval;
 }
 
 

pcbnew/class_board.h

@@ -691,7 +691,7 @@ public:
      * Function GetNodesCount
      * @return the number of pads members of nets (i.e. with netcode > 0)
      */
-    unsigned GetNodesCount() const;
+    unsigned GetNodesCount();
 
     /**
      * Function GetUnconnectedNetCount
@@ -703,7 +703,7 @@ public:
      * Function GetPadCount
      * @return the number of pads in board
      */
-    unsigned GetPadCount() const;
+    unsigned GetPadCount();
 
     /**
      * Function GetPad