#10 added new sort icon
#10 added new Sort Toggle Button to NKFPanel
#10 added ItemStateChangeListener to new toggleButton
#10 unselect toggle button when new Nutzung is added, thus the table becomes unsorted
#10 copy/paste error, when toggle button is selected, then the sort is activated
#10 added Sort icon in black and white
#10 switched the behaviour of the toggle button, selected = unsorted, unselected = sorted
#10 changed tooltip text of toggle button
#10 jalopy
Merge branch 'feature/10-disable-automatic-sort-of-the-table-Nutzung' into dev