QmlDesigner.itemLibrary: always show Qml Components first

Also we do translate "Qml Components" anymore since it might get confusing
and all the other categories do not get translated, either.

src/plugins/qmldesigner/components/itemlibrary/itemlibrarymodel.cpp

@@ -301,16 +301,13 @@ void ItemLibrarySectionModel::updateItemIconSize(const QSize &itemIconSize)
     }
 }
 
-
 bool ItemLibrarySectionModel::operator<(const ItemLibrarySectionModel &other) const
 {
+    if (sectionName() == QLatin1String("QML Components")) //Qml Components always come first
+        return true;
     return sectionName() < other.sectionName();
 }
 
-
-
-
-
 ItemLibraryModel::ItemLibraryModel(QScriptEngine *scriptEngine, QObject *parent)
     : ItemLibrarySortedModel<ItemLibrarySectionModel>(parent),
       m_scriptEngine(scriptEngine),

src/plugins/qmldesigner/designercore/metainfo/subcomponentmanager.cpp

@@ -350,7 +350,7 @@ void SubComponentManagerPrivate::registerQmlFile(const QFileInfo &fileInfo, cons
         ItemLibraryEntry itemLibraryEntry;
         itemLibraryEntry.setType(componentName, -1, -1);
         itemLibraryEntry.setName(componentName);
-        itemLibraryEntry.setCategory(tr("QML Components"));
+        itemLibraryEntry.setCategory("QML Components");
         m_metaInfo.itemLibraryInfo()->addEntry(itemLibraryEntry);
     }
 }