Fixed #678 - add link to created/edited item in successful save banner

.../deadlocker8/budgetmaster/accounts/AccountController.java

...adlocker8/budgetmaster/categories/CategoryController.java

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

...8/budgetmaster/templategroup/TemplateGroupController.java

...eadlocker8/budgetmaster/templates/TemplateController.java

...e/deadlocker8/budgetmaster/templates/TemplateService.java

...ker8/budgetmaster/transactions/TransactionController.java

...getmaster/utils/notification/NotificationLinkBuilder.java

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

...ocker8/budgetmaster/unit/NotificationLinkBuilderTest.java