[Oxyd] [for 0.16] [0.15.31] Blueprint emptied when no icons specified

[wvlad]

1. Make a new blueprint of anything
2. In the edit window remove all icons
3. Click "Save"

Result: now you hold empty blueprint.

[kovarex]

It is not a bug, non empty blueprint needs to have at least one icon defined.

[rorror]

It is not a bug, non empty blueprint needs to have at least one icon defined.

The user should not be able to change it Nothing it that case. or at least get a notice that it would destroy the content of the blueprint.

[kovarex]

OK, the confirmation for this case is reasonable, adding it to 0.16 tasks.

[Oxyd]

Okay, you won't be able to lose blueprints this way in 0.16.