[Qt] style police and small addition in rpcconsole

- fix spaces, indentation and coding style glitches

src/qt/peertablemodel.cpp

@@ -81,7 +81,6 @@ public:
             }
         }
 
-
         if (sortColumn >= 0)
             // sort cacheNodeStats (use stable sort to prevent rows jumping around unneceesarily)
             qStableSort(cachedNodeStats.begin(), cachedNodeStats.end(), NodeLessThan(sortColumn, sortOrder));
@@ -110,7 +109,6 @@ public:
             return 0;
         }
     }
-
 };
 
 PeerTableModel::PeerTableModel(ClientModel *parent) :