Fix json response in service status class

CORE-1036 Better way of getting json response (#35)

* Common service status response

* New line at the end of the file

* Service => Services

* Better way of getting json response

Service status response feature

One class to rule them all (#34)

* Common service status response

* New line at the end of the file

* Service => Services

3.28.1

-> fix for invalid return types

3.28.0

-> AmountMoney class introduced

3.22.0

ObjectList::hasMatching() introduced

add Base26Converter class

add Base26Converter class needed for future barcode-lib (back-ported from awt-backend)

3.15.0

DateObjectSorage class introduced

3.14.0

DateList class introduced

3.13.0

AmountPenceList class introduced

3.10.3

AmountPenceList class introduced