Sortable: Restrict multi list re-order by default

[ObaidUrRehman]

trafficstars

The sortable directive must be single list sortable by default unless configured i.e. Items should be re-orderable with the list only. Right now this is not the default behavior.

Kinda like scopes. Not sure how we should approach this. I am open to ideas.

[calebeaires]

Hi @ObaidUrRehman, @cah-alexsukhodolsky

Our team has been waiting to the sortable/re-orderable feature for so long. We hope it is still on the early/next release. Thanks again to this great work.

Congrats

[ObaidUrRehman]

@calebeaires I've been busy lately. But I am going to restart this feature now. Thanks for being patient :-)