executing static pages test in one session

.gitlab/ci/integrationtest.yml

metager/tests/Browser/AboutTest.php

metager/tests/Browser/AppTest.php

metager/tests/Browser/DatenschutzTest.php

metager/tests/Browser/HilfeTest.php

metager/tests/Browser/ImpressumTest.php

metager/tests/Browser/KontaktTest.php

metager/tests/Browser/PluginTest.php

metager/tests/Browser/SitesearchWidgetTest.php

metager/tests/Browser/SpendenTest.php

metager/tests/Browser/StartpageTest.php

metager/tests/Browser/StaticPagesTest.php

metager/tests/Browser/TeamTest.php

metager/tests/Browser/WebsearchWidgetTest.php

metager/tests/Browser/WidgetTest.php