added calendar slot_duration config (#989)

tests/Configuration/CalendarConfigurationTest.php

@@ -42,6 +42,7 @@ class CalendarConfigurationTest extends TestCase
                 'end' => '19:27'
             ],
             'day_limit' => 20,
+            'slot_duration' => '01:11:00',
             'week_numbers' => false,
             'google' => [
                 'api_key' => 'wertwertwegsdfbdf243w567fg8ihuon',
@@ -72,6 +73,7 @@ class CalendarConfigurationTest extends TestCase
         $this->assertEquals([2, 4, 6], $sut->getBusinessDays());
         $this->assertEquals('07:49', $sut->getBusinessTimeBegin());
         $this->assertEquals('19:27', $sut->getBusinessTimeEnd());
+        $this->assertEquals('01:11:00', $sut->getSlotDuration());
         $this->assertEquals(20, $sut->getDayLimit());
         $this->assertFalse($sut->isShowWeekNumbers());
 

tests/Controller/CalendarControllerTest.php

@@ -68,6 +68,7 @@ class CalendarControllerTest extends ControllerBaseTest
             ],
             'day_limit' => 20,
             'week_numbers' => false,
+            'slot_duration' => '00:15:00',
             'google' => [
                 'api_key' => 'wertwertwegsdfbdf243w567fg8ihuon',
                 'sources' => [

tests/DependencyInjection/AppExtensionTest.php

@@ -63,6 +63,7 @@ class AppExtensionTest extends TestCase
             'kimai.calendar' => [
                 'week_numbers' => true,
                 'day_limit' => 4,
+                'slot_duration' => '00:30:00',
                 'businessHours' => [
                     'days' => [1, 2, 3, 4, 5],
                     'begin' => '08:00',