Sort items in the library view under the correct divider when they have no unicode decomposition.

Update issue #672
Can you try this and see if it fixes it for you?

src/library/librarymodel.cpp

@@ -626,6 +626,7 @@ void LibraryModel::FinishItem(GroupBy type,
   // Create the divider entry if we're supposed to
   if (create_divider) {
     QString divider_key = DividerKey(type, item);
+    item->sort_text.prepend(divider_key);
 
     if (!divider_key.isEmpty() && !divider_nodes_.contains(divider_key)) {
       if (signal)

src/ui/mainwindow.cpp

@@ -202,7 +202,6 @@ MainWindow::MainWindow(NetworkAccessManager* network, Engine::Type engine, QWidg
   library_sort_model_->setSourceModel(library_->model());
   library_sort_model_->setSortRole(LibraryModel::Role_SortText);
   library_sort_model_->setDynamicSortFilter(true);
-  library_sort_model_->setSortLocaleAware(true);
   library_sort_model_->sort(0);
 
   ui_->playlist->SetManager(playlists_);