added different icons
created menu
moved icons with size 16x16 to folder icons16
added icons with size 22x22
added toolbar
added mainPanel to WatergisApp
added KartenPanel and TreePanel
added KartenPanel and TreePanel to the DockingLayout of the main window
added tooltips in toolbar
changed to icons in the toolbar to 16x16
translated German log messages into English and internationalized German Strings
#1 renamed MapPanel and TopicTreePanel
#1 Components can be fetched via the Broker