+ split file extension from descriptive text of file format to avoid that invalid translation breaks file dialog

+ add method to make image view unclosable for user
+ fix possible crash in MeshAlgorithm::GetMeshBorder
+ fix possible crash in MeshAlgorithm::ConnectLines

src/Gui/PythonConsole.cpp

@@ -1197,7 +1197,7 @@ void PythonConsole::onSaveHistoryAs()
     QString cMacroPath = QString::fromUtf8(getDefaultParameter()->GetGroup( "Macro" )->
         GetASCII("MacroPath",App::Application::getUserAppDataDir().c_str()).c_str());
     QString fn = FileDialog::getSaveFileName(this, tr("Save History"), cMacroPath,
-        tr("Macro Files (*.FCMacro *.py)"));
+        QString::fromLatin1("%1 (*.FCMacro *.py)").arg(tr("Macro Files")));
     if (!fn.isEmpty()) {
         int dot = fn.indexOf(QLatin1Char('.'));
         if (dot != -1) {
@@ -1215,7 +1215,8 @@ void PythonConsole::onSaveHistoryAs()
 
 void PythonConsole::onInsertFileName()
 {
-    QString fn = Gui::FileDialog::getOpenFileName(Gui::getMainWindow(), tr("Insert file name"), QString::null, tr("All Files (*.*)") );
+    QString fn = Gui::FileDialog::getOpenFileName(Gui::getMainWindow(), tr("Insert file name"), QString::null,
+        QString::fromLatin1("%1 (*.*)").arg(tr("All Files")));
     if ( fn.isEmpty() )
         return;
     insertPlainText(fn);