Merge branch 'v2_7_0'

...er8/budgetmaster/database/model/v4/BackupDatabase_v4.java

...er8/budgetmaster/database/model/v4/BackupTemplate_v4.java

.../budgetmaster/database/model/v4/BackupTransaction_v4.java

...ker8/budgetmaster/database/model/v5/BackupAccount_v5.java

...er8/budgetmaster/database/model/v5/BackupCategory_v5.java

...er8/budgetmaster/database/model/v5/BackupDatabase_v5.java

...er8/budgetmaster/database/model/v5/BackupTemplate_v5.java

.../budgetmaster/database/model/v5/BackupTransaction_v5.java

...ker8/budgetmaster/database/model/v6/BackupAccount_v6.java

...er8/budgetmaster/database/model/v6/BackupDatabase_v6.java

...er8/budgetmaster/database/model/v6/BackupTemplate_v6.java

...ker8/budgetmaster/database/model/v7/BackupAccount_v7.java

...er8/budgetmaster/database/model/v7/BackupCategory_v7.java

...er8/budgetmaster/database/model/v7/BackupDatabase_v7.java

...locker8/budgetmaster/database/model/v7/BackupIcon_v7.java

...er8/budgetmaster/database/model/v7/BackupTemplate_v7.java

src/main/java/de/deadlocker8/budgetmaster/hints/Hint.java

...ava/de/deadlocker8/budgetmaster/hints/HintController.java

...ava/de/deadlocker8/budgetmaster/hints/HintRepository.java

...n/java/de/deadlocker8/budgetmaster/hints/HintService.java