Added job attributes, fixed seeds.rb

Added some attributes like status_changed_at. Refactored migration
files.
Changes to the migration file makes it necessary to reimport the
database: db:drop, db:create, db:migrate, db:seed

db/migrate/20240727101347_create_jobs.rb

@@ -10,6 +10,7 @@ class CreateJobs < ActiveRecord::Migration[7.1]
       t.boolean :printed, default: false
       t.boolean :paid, default: false
       t.datetime :printed_at
+      t.datetime :status_changed_at
       t.datetime :paid_at
       t.boolean :intern, default: false
       t.string :cost_center
@@ -19,7 +20,7 @@ class CreateJobs < ActiveRecord::Migration[7.1]
       t.integer :number_of_plans_a2, default: 0
       t.integer :number_of_plans_a3, default: 0
       t.float :costum_qm_plan, default: 0
-      t.string :pdf
+      t.boolean :privacy_policy_accepted, default: false
 
       t.timestamps
     end