Export string conversation_context__menu_reply_to_message

Additionally changed from "Reply" to "Reply to message" as other
related strings are more comprehensive as well.

Closes #7732

res/menu/conversation_context.xml

@@ -31,7 +31,7 @@
           android:icon="?menu_save_icon"
           app:showAsAction="always" />
 
-    <item android:title="Reply"
+    <item android:title="@string/conversation_context__menu_reply_to_message"
           android:id="@+id/menu_context_reply"
           android:visible="true"
           android:icon="?menu_reply_icon"

res/values/strings.xml

@@ -1217,6 +1217,7 @@
     <string name="conversation_context__menu_delete_message">Delete message</string>
     <string name="conversation_context__menu_forward_message">Forward message</string>
     <string name="conversation_context__menu_resend_message">Resend message</string>
+    <string name="conversation_context__menu_reply_to_message">Reply to message</string>
 
     <!-- conversation_context_image -->
     <string name="conversation_context_image__save_attachment">Save attachment</string>