Autofocus for frequently used input fields

Fixes #1157.
- Focus `name` field on new part
- Focus `amount` on add/withdraw modal
- Focus first "number type" input on any newly added collectionType table row... (debatable)

It would be even more favorable if the user could configure if they want to use autofocus and/or for which fields/dialogs it should be enabled.

src/Form/AdminPages/BaseEntityAdminForm.php

@@ -71,6 +71,7 @@ class BaseEntityAdminForm extends AbstractType
                 'label' => 'name.label',
                 'attr' => [
                     'placeholder' => 'part.name.placeholder',
+                    'autofocus' => true,
                 ],
                 'disabled' => !$this->security->isGranted($is_new ? 'create' : 'edit', $entity),
             ]);