Override all dataview types for overviews

All are using now the default behaviour defined in the base
class.

lib/cartodb/models/dataview/overviews/aggregation.js

@@ -0,0 +1,11 @@
+var BaseOverviewsWidget = require('./base');
+var BaseDataview = require('../aggregation');
+
+function Aggregation(query, options, queryRewriter, queryRewriteData, params) {
+    BaseOverviewsWidget.call(this, query, options, BaseDataview, queryRewriter, queryRewriteData, params);
+}
+
+Aggregation.prototype = Object.create(BaseOverviewsWidget.prototype);
+Aggregation.prototype.constructor = Aggregation;
+
+module.exports = Aggregation;

lib/cartodb/models/dataview/overviews/histogram.js

@@ -0,0 +1,11 @@
+var BaseOverviewsWidget = require('./base');
+var BaseDataview = require('../histogram');
+
+function Histogram(query, options, queryRewriter, queryRewriteData, params) {
+    BaseOverviewsWidget.call(this, query, options, BaseDataview, queryRewriter, queryRewriteData, params);
+}
+
+Histogram.prototype = Object.create(BaseOverviewsWidget.prototype);
+Histogram.prototype.constructor = Histogram;
+
+module.exports = Histogram;

lib/cartodb/models/dataview/overviews/index.js

@@ -1,3 +1,6 @@
 module.exports = {
-    Formula: require('./formula')
+  Aggregation: require('./aggregation'),
+  Formula: require('./formula'),
+  Histogram: require('./histogram'),
+  List: require('./list')
 };

lib/cartodb/models/dataview/overviews/list.js

@@ -0,0 +1,11 @@
+var BaseOverviewsWidget = require('./base');
+var BaseDataview = require('../list');
+
+function List(query, options, queryRewriter, queryRewriteData, params) {
+    BaseOverviewsWidget.call(this, query, options, BaseDataview, queryRewriter, queryRewriteData, params);
+}
+
+List.prototype = Object.create(BaseOverviewsWidget.prototype);
+List.prototype.constructor = List;
+
+module.exports = List;