Fixed #671 - Only save dates to database (instead of date and time):

pom.xml

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

...ava/de/deadlocker8/budgetmaster/backup/GitBackupTask.java

...a/de/deadlocker8/budgetmaster/charts/ChartController.java

...ava/de/deadlocker8/budgetmaster/charts/ChartSettings.java

...locker8/budgetmaster/controller/DatePickerController.java

...de/deadlocker8/budgetmaster/database/DatabaseService.java

...database/model/converter/RepeatingEndOptionConverter.java

...er/database/model/converter/RepeatingOptionConverter.java

...master/database/model/converter/TransactionConverter.java

...e/deadlocker8/budgetmaster/repeating/RepeatingOption.java

...8/budgetmaster/repeating/RepeatingTransactionUpdater.java

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

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

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

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

...r8/budgetmaster/repeating/modifier/RepeatingModifier.java

...udgetmaster/repeating/modifier/RepeatingModifierDays.java

...getmaster/repeating/modifier/RepeatingModifierMonths.java

...dgetmaster/repeating/modifier/RepeatingModifierYears.java