Localization improvements : Empty spaces at the end of phrase are removed from dictionary.

+ new POT

src/slic3r/GUI/MainFrame.cpp

@@ -683,7 +683,7 @@ void MainFrame::quick_slice(const int qs)
     } 
     else if (qs & qsSaveAs) {
         // The following line may die if the output_filename_format template substitution fails.
-        auto dlg = new wxFileDialog(this, _(L("Save ")) + (qs & qsExportSVG ? _(L("SVG")) : _(L("G-code"))) + _(L(" file as:")),
+        auto dlg = new wxFileDialog(this, wxString::Format(_(L("Save %s file as:") , (qs & qsExportSVG ? _(L("SVG")) : _(L("G-code")) ))),
             wxGetApp().app_config->get_last_output_dir(get_dir_name(output_file)), get_base_name(input_file), 
             qs & qsExportSVG ? file_wildcards(FT_SVG) : file_wildcards(FT_GCODE),
             wxFD_SAVE | wxFD_OVERWRITE_PROMPT);
@@ -710,7 +710,9 @@ void MainFrame::quick_slice(const int qs)
     }
 
     // show processbar dialog
-    m_progress_dialog = new wxProgressDialog(_(L("Slicing")) + dots, _(L("Processing ")) + input_file_basename + "…",
+    m_progress_dialog = new wxProgressDialog(_(L("Slicing")) + dots, 
+    // TRN "Processing input_file_basename"
+                                             wxString::Format(_(L("Processing %s")), input_file_basename + dots),
         100, this, 4);
     m_progress_dialog->Pulse();
     {