Merge branch 'ui' into 'development'

README.md

...tgart/battlearena/Controller/CreateAccountController.java

...hdm_stuttgart/battlearena/Controller/IntroController.java

...tgart/battlearena/Controller/LoadingScreenController.java

...hdm_stuttgart/battlearena/Controller/LoginController.java

...gart/battlearena/Controller/MenuBorderPaneController.java

...uttgart/battlearena/Controller/PlaceholderController.java

...ttgart/battlearena/Controller/PlayerCreateController.java

..._stuttgart/battlearena/Controller/SettingsController.java

...rt/battlearena/Controller/Utilities/ButtonTransition.java

src/main/java/de/hdm_stuttgart/battlearena/Main/Driver.java

src/main/java/de/hdm_stuttgart/battlearena/Main/Main.java

...learena/Model/DataStorage/Classes/ENUMs/ThreadStatus.java

...rt/battlearena/Model/DataStorage/Classes/Persistence.java

...battlearena/Model/DataStorage/Classes/ThreadStartup2.java

src/main/resources/fonts/AmaticSC-Bold.ttf

src/main/resources/fonts/AmaticSC-Regular.ttf

src/main/resources/fonts/Arthemis-mLA22.ttf

src/main/resources/fonts/ShadowsIntoLight-Regular.ttf

src/main/resources/fxml/CreateAccount.fxml