Whoops 1.1 update
Use ConfirmableTrait in Seeder

Just like migrations
Force the seeding

Otherwise it has to be confirmed twice.
Merge pull request #4378 from GrahamCampbell/4.2-whoops

[4.2] Updated Whoops
Merge pull request #4392 from barryvdh/patch-1

use ConfirmableTrait in db:seed
Fix array call.
Update Symfony displayer.
Use symfony exception handler because of broken Whoops.