[FIX] web: calendar don't return to month mode in US

When click on the mini calendar, the calendar does not return to month
mode.

addons/web/static/src/js/views/calendar/calendar_controller.js

@@ -113,7 +113,7 @@ var CalendarController = AbstractController.extend({
      */
     _onChangeDate: function (event) {
         var modelData = this.model.get();
-        if (modelData.target_date.isSame(event.data.date)) {
+        if (modelData.target_date.format('YYYY-MM-DD') === event.data.date.format('YYYY-MM-DD')) {
             // When clicking on same date, toggle between the two views
             switch (modelData.scale) {
                 case 'month': this.model.setScale('week'); break;

addons/web/static/src/js/views/calendar/calendar_model.js

@@ -255,6 +255,8 @@ return AbstractModel.extend({
      */
     setDate: function (start, highlight) {
         this.data.start_date = this.data.end_date = this.data.target_date = this.data.highlight_date = start;
+        this.data.start_date.utc().add(this.getSession().getTZOffset(this.data.start_date), 'minutes');
+
         switch (this.data.scale) {
             case 'month':
                 this.data.start_date = this.data.start_date.clone().startOf('month').startOf('week');
@@ -391,6 +393,12 @@ return AbstractModel.extend({
             firstDay: moment().startOf('week').isoWeekday(),
         };
     },
+    /**
+     * Return a domain from the date range
+     *
+     * @private
+     * @returns {Array}
+     */
     _getRangeDomain: function () {
         // Build OpenERP Domain to filter object by this.mapping.date_start field
         // between given start, end dates.