Allow excluding "Stock transfer orders" from Sales Dashboard charts

Hey guys, thanks for the comments on this.

We’re going to be implementing Stock Transfer Orders without Raising Invoices soon. With this, only stock transfers that are invoiced will be included in the sales dashboard charts (you’ll have the option on each stock transfer order for whether it should be invoiced or not).

I think this will resolve this request too, so I’ve set this to auto-close in 2 weeks, but if you think this isn’t going to do what you need, please do reply here and let me know why. Cheers!