Avoid headless mode in selenium tests

...ocker8/budgetmaster/integration/selenium/AccountTest.java

...aster/integration/selenium/ChangeTransactionTypeTest.java

...cker8/budgetmaster/integration/selenium/FirstUseTest.java

...locker8/budgetmaster/integration/selenium/HotkeyTest.java

...locker8/budgetmaster/integration/selenium/ImportTest.java

...udgetmaster/integration/selenium/LoginControllerTest.java

.../integration/selenium/NewTransactionFromTemplateTest.java

...master/integration/selenium/NewTransactionNormalTest.java

...ter/integration/selenium/NewTransactionRecurringTest.java

...ster/integration/selenium/NewTransactionTransferTest.java

...locker8/budgetmaster/integration/selenium/SearchTest.java

...cker8/budgetmaster/integration/selenium/WhatsNewTest.java