Update Russian translation (#702)

Author: solokot

res/values-ru/strings.xml

@@ -68,9 +68,9 @@
   <string name="pref_theme_e_epaper">Электронная бумага</string>
   <string name="pref_theme_e_desert">Пустыня</string>
   <string name="pref_theme_e_jungle">Джунгли</string>
-  <!-- <string name="pref_theme_e_monet">Monet (System)</string> -->
-  <!-- <string name="pref_theme_e_monetlight">Monet (Light)</string> -->
-  <!-- <string name="pref_theme_e_monetdark">Monet (Dark)</string> -->
+  <string name="pref_theme_e_monet">Моне (системная)</string>
+  <string name="pref_theme_e_monetlight">Моне (светлая)</string>
+  <string name="pref_theme_e_monetdark">Моне (темная)</string>
   <string name="pref_swipe_dist_e_very_short">Очень короткая</string>
   <string name="pref_swipe_dist_e_short">Короткая</string>
   <string name="pref_swipe_dist_e_default">Обычная</string>
@@ -119,9 +119,9 @@
   <string name="key_descr_page_down">Страница вниз</string>
   <string name="key_descr_home">Home</string>
   <string name="key_descr_end">End</string>
-  <!-- <string name="key_descr_clipboard">Clipboard manager</string> -->
-  <!-- <string name="clipboard_history_heading">Recently copied text</string> -->
-  <!-- <string name="clipboard_pin_heading">Pinned</string> -->
-  <!-- <string name="clipboard_remove_confirm">Remove this clipboard?</string> -->
-  <!-- <string name="clipboard_remove_confirmed">Yes</string> -->
+  <string name="key_descr_clipboard">Менеджер буфера обмена</string>
+  <string name="clipboard_history_heading">Недавно скопированный текст</string>
+  <string name="clipboard_pin_heading">Закреплено</string>
+  <string name="clipboard_remove_confirm">Удалить этот буфер обмена?</string>
+  <string name="clipboard_remove_confirmed">Да</string>
 </resources>