Fixed issue #890. Menu Windows->Close pattern doesn't clear "Group of

visibility" list.
(grafted from 36be0b8fc57d31b2cf949adc86c713e85bfd0cb3)

--HG--
branch : develop

ChangeLog.txt

@@ -1,6 +1,7 @@
 # Version 0.6.1 (unreleased)
 - [#885] Regression. Broken support for multi size measurements.
 - Fixed issues with seam allowance.
+- [#890] Menu Windows->Close pattern doesn't clear "Group of visibility" list.
 
 # Version 0.6.0 October 1, 2018
 - [#682] New feature. Export increments to Excel .csv.

src/app/valentina/mainwindow.cpp

@@ -2917,6 +2917,8 @@ void MainWindow::Clear()
         watcher->removePath(AbsoluteMPath(qApp->GetPatternPath(), doc->MPath()));
     }
     doc->clear();
+    UpdateVisibilityGroups();
+    detailsWidget->UpdateList();
     qCDebug(vMainWindow, "Clearing scenes.");
     sceneDraw->clear();
     sceneDetails->clear();