Implementing banner

[Seyaku]

ok, I'll rework it with Json::Value, shouldn't be too much work.

And look at the copy constructor and assignment op ->

Code:

    if (a_CopyFrom.GetItemMeta()) {
        cItemMeta * meta = GetHandler()->MakeItemMeta();
        if (meta) {
            meta->FromCopy(a_CopyFrom.GetItemMeta());
            SetItemMeta(meta);
        }
    }