Logistics groups need a lock or a delete warning.

[MechBFP]

Hey there,

With the introduction of the ability to create logistics groupings, it is now possible to accidentally delete a logistic group with no way to undo it other than loading an older save game, or recreating it from scratch.

The main reason why this is an issue is because the delete button is right next to the item tabs, and if you over shoot those tabs you can quite easily hit that delete button by accident.