Feature/manga migration (#536)

* Add "migration" tab to "Browse" screen

* Add missing useEffect cleanup for navbar title and actions

* Make "SourceGridLayout" reusable

* Add migration tab to "Browse"

* Add migration logic

src/screens/settings/Categories.tsx

@@ -48,8 +48,13 @@ export function Categories() {
 
     const { setTitle, setAction } = useContext(NavBarContext);
     useEffect(() => {
-        setTitle(t('category.title.categories'));
+        setTitle(t('category.title.category_other'));
         setAction(null);
+
+        return () => {
+            setTitle('');
+            setAction(null);
+        };
     }, [t]);
 
     const { data } = requestManager.useGetCategories();