" views" needs placeholder and plural form

The string " views" in /src/youtube/scope/preview.cpp has hard-coded word order, and also does not allow proper translation of plural forms.

This is the line:

    header.add_attribute_value("subtitle", sc::Variant(format_fixed(s.view_count) + _(" views") +
                                                       u8" \u261d " + format_fixed(s.like_count) +
                                                       u8" \u261f " + format_fixed(s.dislike_count) +
                                                       u8" \u270E " + format_fixed(s.comment_count)));

The translation should be fetched with ngettext("%d view", "%d views", s.view_count) and the %d in the result then be replaced by format_fixed(s.view_count).