Release 2.0.29 (#4178)

- show button title if delete is used in page actions
- fix invoice due date depends on invoice date, replace DateTime with DateTimeI… 
- lowercase all font names in PDFs, otherwise they fail loading
- hide empty fieldset (work-contract page)
- activate contract_other_profile by default for admin and super-admin
- deactivate rule to check "maximum duration of entries" by default
- allow to deactivate presets in DateRange Picker (for Devs)

tests/Invoice/Hydrator/InvoiceModelDefaultHydratorTest.php

@@ -20,7 +20,7 @@ class InvoiceModelDefaultHydratorTest extends TestCase
 {
     use RendererTestTrait;
 
-    public function testHydrate()
+    public function testHydrate(): void
     {
         $model = $this->getInvoiceModel();
 
@@ -30,7 +30,7 @@ class InvoiceModelDefaultHydratorTest extends TestCase
         $this->assertModelStructure($result);
     }
 
-    protected function assertModelStructure(array $model, $hasProject = true)
+    protected function assertModelStructure(array $model, bool $hasProject = true): void
     {
         $keys = [
             'invoice.due_date',