#764 - add new settings option to enable/disable account end date reminders

...n/java/de/deadlocker8/budgetmaster/settings/Settings.java

...deadlocker8/budgetmaster/settings/SettingsController.java

...de/deadlocker8/budgetmaster/settings/SettingsService.java

...master/settings/containers/AccountsSettingsContainer.java

...terServer/src/main/resources/languages/base_de.properties

...terServer/src/main/resources/languages/base_en.properties

...ources/templates/settings/containers/settingsAccounts.ftl

...Server/src/main/resources/templates/settings/settings.ftl