New snapshot prepared
First version: show all open bills
Test
Show and load open bills

* Start over with a new bill
* Show and load already open bills
Split bill view

* The control buttons are now on the upper right side, making the bill
window a little smaller
openBills test working when run separate
Fixed test
Zwischenstand
Merge remote-tracking branch 'origin/technical/fixunittests' into
develop

Conflicts [solved]:
	oscr/oscr-business/src/test/java/de/bstreit/java/oscr/business/bill/BillTestFactory.java
	oscr/oscr-gui-swing/src/main/java/de/bstreit/java/oscr/gui/swing/cashregister/ui/factories/ButtonPanelFactory.java
Improved staff consumption addin

* can calculate totals (according to current German laws)
* can return management consumption now
Reduced visibility to package
Pivot stats
Better solution for property files

TEMPlATES are now in oscr-business, as they are now used as defaults if
keys are missing. Avoids that the software does not start after an
update when the properties were not adapted.
Temporarily ignoring test
More Views
Tuned views
One more
More info in management consumption
Some improvements on unit tests (still need more fixes)
Fixed DB handling