Configurable activity and project number (#4729)

* added configurable activity number
* added configurable project number
* fix deprecations
* added some tests for entity exporter
* better configuration of dropdown pattern for customer, project and activity

src/Form/ProjectEditForm.php

@@ -65,6 +65,13 @@ class ProjectEditForm extends AbstractType
                     'autofocus' => 'autofocus'
                 ],
             ])
+            ->add('number', TextType::class, [
+                'label' => 'project_number',
+                'required' => false,
+                'attr' => [
+                    'maxlength' => 10,
+                ],
+            ])
             ->add('comment', TextareaType::class, [
                 'label' => 'description',
                 'required' => false,