In "PostvisualizationWindow.java", added button to generate TikZ image.

Action "ActionGenerateTikZ" is a copy of "ActionGenerateSVG".

Add new online and offline visualization button to toggle
group view for pedestrians.

New toolbar button with modal dialog to change width and size of
topography from the topography creator window.
Todo: new icon for resize action
Todo: Scenario Pane is not marked as changed (asterisk on scenario name)
Todo: Message Dialog for wrong syntax
Todo: allow comma an decimal point

Fix #42: in "ScenarioPanel.java", group model names in GUI under menu "Insert model name" (in "Model" tab).

Note: no unit tests have been written for new methods in "ClassFinder.java".

add feature: it is now possible to display the target potential field of a specific agent if the main model is a potential field model.

update migration assistent such that one can choose from based on which version a project should be reimigrated.

the language should now change correctly, especially if the default language of the operating system is german.