Upgrade express, adds body-parser

- basic changes in server
- basic changes in unit tests

test/unit/cartodb/ported/tile_stats.test.js

@@ -36,6 +36,9 @@ describe('tile stats', function() {
             }
         };
         var resMock = {
+            status: function() { return this; },
+            json: function() {},
+            jsonp: function() {},
             send: function() {}
         };
         layergroupController.finalizeGetTileOrGrid('Unsupported format png2', reqMock, resMock, null, null);
@@ -61,6 +64,9 @@ describe('tile stats', function() {
             }
         };
         var resMock = {
+            status: function() { return this; },
+            json: function() {},
+            jsonp: function() {},
             send: function() {}
         };
 

test/unit/cartodb/ported/windshaft_server.test.js

@@ -19,9 +19,9 @@ describe('windshaft', function() {
 
     it('can spawn a new server on the global listen port', function(done){
         var ws = cartodbServer(serverOptions);
-        ws.listen(global.environment.windshaft_port, function() {
+        var server = ws.listen(global.environment.windshaft_port, function() {
             assert.ok(ws);
-            ws.close(done); /* allow proper tear down */
+            server.close(done); /* allow proper tear down */
         });
     });