add time and date also in viewevents widget

lib/viewevents.dart

@@ -49,6 +49,18 @@ class ViewEvents extends StatelessWidget {
                   style: TextStyle(fontStyle: FontStyle.italic),
                 ),
               ),
+              DataColumn(
+                label: Text(
+                  'StartDate',
+                  style: TextStyle(fontStyle: FontStyle.italic),
+                ),
+              ),
+              DataColumn(
+                label: Text(
+                  'EndDate',
+                  style: TextStyle(fontStyle: FontStyle.italic),
+                ),
+              ),
               DataColumn(
                 label: Text(
                   'Latitude',
@@ -99,6 +111,8 @@ class ViewEvents extends StatelessWidget {
                         },
                       ),
                     ),
+                    DataCell(Text(event.startDate)),
+                    DataCell(Text(event.endDate)),
                     DataCell(
                       TextFormField(
                         readOnly: true,