#1 MapPanel attached itself to the PNotificationCenter as listener, removed these attachments
#1 added mnemonics for the menu in Bundle.properties
#1 different buttons and menuitems use actions to get their appearence (text, icons...)
#1 yet other buttons and menuitems use actions to get their appearence (text, icons...)
#1 the selection buttons and menuitems use Actions to get their appearence (text, icons...)
#1 the map buttons use Actions to get their appearence (text, icons...)
#1 remaining buttons and menuItems use Actions to get their appearence (text, icons...)