#178, #267 - added radio buttons for repeating end options

...eadlocker8/budgetmaster/controller/PaymentController.java

...ocker8/budgetmaster/repeating/endoption/RepeatingEnd.java

...etmaster/repeating/endoption/RepeatingEndAfterXTimes.java

...r8/budgetmaster/repeating/endoption/RepeatingEndDate.java

...8/budgetmaster/repeating/endoption/RepeatingEndNever.java

src/main/resources/languages/_de.properties

src/main/resources/languages/_en.properties

src/main/resources/static/css/style.css

src/main/resources/static/js/payments.js

src/main/resources/templates/payments/newPayment.ftl