[Qt] tweak new peers tab in console window

- remove starting height as table header and replace with ping time
- remove columnResizingFixer
- add local address (if available) in detailed node view (on top of the
  right view below the remote address)
- remove some .c_str() by using QString::fromStdString()
- rename Address to Address/Hostname
- rename secs to just s for ping time
- use MODEL_UPDATE_DELAY from guiconstants.h for the peer refresh time
- make PeerTableModel::columnCount() return no hard-coded value
- remove and cleanup dup private: section in RPCConsole header
- add new defaults for column sizes
- remove behaviour which keeps disconnected peers selected and also remove
  code which keeps track of last selected peer stats
- add sync height to detail view
- add some additional NULL pointer checks for clientModel in
  rpcconsole.cpp

src/qt/rpcconsole.h

@@ -44,21 +44,6 @@ public:
 protected:
     virtual bool eventFilter(QObject* obj, QEvent *event);
 
-private:
-    /** show detailed information on ui about selected node */
-    void updateNodeDetail(const CNodeCombinedStats *combinedStats);
-    /** initialize peer table */
-    void initPeerTable();
-
-    enum ColumnWidths
-    {
-        ADDRESS_COLUMN_WIDTH = 250,
-        MINIMUM_COLUMN_WIDTH = 120
-    };
-
-    /** track the node that we are currently viewing detail on in the peers tab */
-    CNodeCombinedStats detailNodeStats;
-
 private slots:
     void on_lineEdit_returnPressed();
     void on_tabWidget_currentChanged(int index);
@@ -96,15 +81,23 @@ signals:
 
 private:
     static QString FormatBytes(quint64 bytes);
+    void startExecutor();
     void setTrafficGraphRange(int mins);
+    /** show detailed information on ui about selected node */
+    void updateNodeDetail(const CNodeCombinedStats *stats);
+
+    enum ColumnWidths
+    {
+        ADDRESS_COLUMN_WIDTH = 200,
+        SUBVERSION_COLUMN_WIDTH = 100,
+        PING_COLUMN_WIDTH = 80
+    };
 
     Ui::RPCConsole *ui;
     ClientModel *clientModel;
     QStringList history;
-    GUIUtil::TableViewLastColumnResizingFixer *columnResizingFixer;
     int historyPtr;
-
-    void startExecutor();
+    NodeId cachedNodeid;
 };
 
 #endif // RPCCONSOLE_H