Fix bug in PR 1045: load any activity from JSON.

The limit to explore-in-activity-mode was due to a misunderstanding from
the discussion of PR 1045.

Always load all the start data from the JSON. If it is an activity, the
extra data (eg. Weather) will be ignored, as the data from the activity
prevails. If it is explore (both) and data is missing, defaults will be
used.

Author: rwf-rr

Source/Menu/MainForm.cs

@@ -1389,10 +1389,9 @@ void UpdateFromMenuSelection<T>(ComboBox comboBox, UserSettings.Menu_SelectionIn
             }
             else
             {
-                // when explore-in-activity mode, try the content route info
+                // try the content route info
                 var routes = Settings.Content.ContentRouteSettings.Routes;
-                if ((SelectedActivity != null && SelectedActivity is ExploreThroughActivity) &&
-                    (SelectedFolder != null && routes.ContainsKey(SelectedFolder.Name) && routes[SelectedFolder.Name].Installed) &&
+                if ((SelectedFolder != null && routes.ContainsKey(SelectedFolder.Name) && routes[SelectedFolder.Name].Installed) &&
                     (!string.IsNullOrEmpty(routes[SelectedFolder.Name].Start.Route)))
                 {
                     var route = routes[SelectedFolder.Name];