docs(excel_exporting): Add date column and fix examples.

* Initial checkin of export to excel. No examples or unit tests

* Eliminate $$hashKey and uidPrefix = 'uiGrid' from export

* Sheet name cannot be empty string or it causes export errors. Default to 'Sheet1'

* Additional languages

* Add documentation

* fix syntax causing lint errors. Check if not a tree when exporting to prevent error

* Updated example with colors

* Update unit tests and fix the lodash version for import to remove ambiguity.

* Update comments

* Fix menu under strict mode from throwing error

* Updated directions for npm and add more formatting examples

* Fix test cases for excel export that was a merge error

* fix(exporter): Fix bug where selection column width was included

* docs(410_excel_exporting*.ngdoc): Add date column and example with exporting with cellFilters

* docs(410_excel_exporting*.ngdoc): Fix for native excel 2017. No 'type'

* Resolving merge conflict

Author: monster910

misc/tutorial/410_excel_exporting_data_and_header.ngdoc

@@ -51,13 +51,35 @@ In this example we use the native grid menu buttons, and we show the pdf, csv an
 
       $scope.formatters = {};
 
+      $scope.randomDate = function randomDate(start, end) {
+        var diff =  end.getTime() - start.getTime();
+        var new_diff = diff * Math.random();
+        var date = new Date(start.getTime() + new_diff);
+        return date;
+      };
+
       $scope.gridOptions = {
         columnDefs: [
           { field: 'name' },
           { field: 'gender', visible: false},
           { field: 'company' },
           { field: 'member' },
-          { field: 'total' }
+          { field: 'total' },
+          { field: 'updatedDate', displayName: 'Date', cellFilter: 'date:\'yyyy-MM-dd\'', width: 150,
+            sortingAlgorithm: function (aDate, bDate) {
+                 var a=new Date(aDate);
+                 var b=new Date(bDate);
+                 if (a < b) {
+                   return -1;
+                 }
+                 else if (a > b) {
+                   return 1;
+                 }
+                 else {
+                   return 0;
+                 }
+               }
+          }
         ],
         enableGridMenu: true,
         enableSelectAll: true,
@@ -96,6 +118,8 @@ In this example we use the native grid menu buttons, and we show the pdf, csv an
           var formatter = stylesheet.createFormat(aFormatDefn);
           // save the formatter
           $scope.formatters['bold'] = formatter;
+          var dateFormatter = stylesheet.createSimpleFormatter('date');
+          $scope.formatters['date'] = dateFormatter;
 
           aFormatDefn = {
             "font": stdStyle.id,
@@ -136,16 +160,21 @@ In this example we use the native grid menu buttons, and we show the pdf, csv an
          // set metadata on export data to set format id. See exportExcelHeader config above for example of creating
          // a formatter and obtaining the id
          var formatterId = null;
-         if (cellValue && typeof cellValue === 'string' && cellValue.startsWith('W')) {
+         if (gridCol.field === 'name' && cellValue && cellValue.startsWith('W')) {
            formatterId = $scope.formatters['red'].id;
          }
 
+         if (gridCol.field === 'updatedDate') {
+           formatterId = $scope.formatters['date'].id;
+         }
+
          if (formatterId) {
            return {metadata: {style: formatterId}};
          } else {
            return null;
          }
-       },
+        },
+        exporterFieldApplyFilters: true,
         onRegisterApi: function(gridApi){
           $scope.gridApi = gridApi;
         }
@@ -158,9 +187,11 @@ In this example we use the native grid menu buttons, and we show the pdf, csv an
         for (var i=0; i < data.length; i++) {
           data[i].member = false;
           data[i].total = i + 0.1;
+          data[i].updatedDate = $scope.randomDate(new Date('09-11-2008'), new Date());
         }
         $scope.gridOptions.data = data;
       });
+
     }]);
   </file>