Update es-ES.lib_xjoomla.ini

Update all inbox language in spanish  ->

COM_COMMUNITY_INBOX="Mensajes"
COM_COMMUNITY_INBOX_PRIVATE_MESSAGING = "Mensajes privados"
COM_COMMUNITY_INBOX_COMPOSE = "Escribir"
COM_COMMUNITY_INBOX_FILTER_SELECT = "Seleccionar"
COM_COMMUNITY_INBOX_FILTER_ALL = "Todo"
COM_COMMUNITY_INBOX_FILTER_READ = "Leido"
COM_COMMUNITY_INBOX_FILTER_UNREAD = "No leido"
COM_COMMUNITY_INBOX_FILTER_NONE = "Ninguno"

COM_COMMUNITY_INBOX_DROPDOWN_MARKREAD = "Marcar como leido"
COM_COMMUNITY_INBOX_DROPDOWN_MARKUNREAD = "Marcar como no leido"
COM_COMMUNITY_INBOX_DROPDOWN_DELETE = "Borrar"