Wasser- und Stromzhähler
Initialized List to stop NPE from being thrown
Fixed data exception string data, right truncation

Apparent problem is a default setting in Hsqldb that defines the length of a column in the database.
Reworked gaesteliste to show bookings

Problem: Bookins are not yet saved upon creation in the corresponding Camper-class.
Further work on gaesteliste
BalanceController initializer() creates Customer, LivingSpace, ParkingSpace, repairs LivinSpace, creates a Booking
Quickfix for casting exception
Merge branch 'master' into nadja

Conflicts:
	src/main/java/de/tudresden/inf/swt14w31/inventorymanagement/InventoryItemRepository.java