Fixed obsoleted GetEditor() function (moved to EditorUtils)

prs.mobile.new/PRS.Mobile/CustomControls/Selection Screens/GenericSelectionPage.xaml.cs

@@ -77,7 +77,7 @@ namespace PRS.Mobile
             foreach (var column in columns)
             {
                 var prop = CoreUtils.GetProperty<T>(column.Property);
-                var editor = prop.GetEditor();
+                var editor = EditorUtils.GetEditor(prop.PropertyType);
                 if (editor is ImageDocumentEditor)
                     return column;
             }
@@ -113,7 +113,7 @@ namespace PRS.Mobile
             var columns = LookupFactory.DefineColumns<T>();
             foreach (var column in columns)
             {
-                var editor = CoreUtils.GetProperty(typeof(T), column.Property).GetEditor();
+                var editor = EditorUtils.GetEditor(CoreUtils.GetProperty(typeof(T), column.Property).PropertyType);
                 if (editor?.Visible != Visible.Default)
                     VisibleColumns.Add(column);
                 else