merged v_1_2_0 into charts

src/de/deadlocker8/budgetmaster/logic/ExceptionHandler.java

src/de/deadlocker8/budgetmaster/logic/Helpers.java

src/de/deadlocker8/budgetmaster/logic/ServerConnection.java

...locker8/budgetmaster/logic/ServerConnectionException.java

src/de/deadlocker8/budgetmaster/logic/Settings.java

src/de/deadlocker8/budgetmaster/logic/Utils.java

src/de/deadlocker8/budgetmaster/main/Main.java

src/de/deadlocker8/budgetmaster/ui/CategoryController.java

src/de/deadlocker8/budgetmaster/ui/Controller.java

src/de/deadlocker8/budgetmaster/ui/HomeController.java

src/de/deadlocker8/budgetmaster/ui/Modal.fxml

src/de/deadlocker8/budgetmaster/ui/ModalController.java

...de/deadlocker8/budgetmaster/ui/NewCategoryController.java

src/de/deadlocker8/budgetmaster/ui/NewCategoryGUI.fxml

src/de/deadlocker8/budgetmaster/ui/NewPaymentController.java

src/de/deadlocker8/budgetmaster/ui/NewPaymentGUI.fxml

src/de/deadlocker8/budgetmaster/ui/PaymentController.java

src/de/deadlocker8/budgetmaster/ui/SettingsController.java

src/de/deadlocker8/budgetmaster/ui/SettingsTab.fxml

src/de/deadlocker8/budgetmaster/ui/cells/PaymentCell.java