Added ru (русский) translation

[ashed]

I have translated your application into ru (русский). Here is the xml:

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string name="app_name">Save For Offline</string>

    <string name="action_add">Добавить новый</string>
    <string name="action_delete">Удалить</string>
    <string name="action_open_in_external">Открыть ссылку</string>
    <string name="action_bar_subtitle_showing_all">Все сохраненные страницы</string>
    <string name="one_search_result">Один результат поиска</string>
    <string name="no_search_results">Нет результатов поиска</string>
    <string name="num_search_results">результаты поиска</string>

</resources>

---

Translation made with Stringlate.

[JonasCz]

I've added your translation to the code - thank you !