Update developers documentation: tool landscape for AF3
Update https://af3.fortiss.org/projects/autofocus3/wiki/Eclipse_Development_Environment with information about the tools used in AF3 (for what task is each tool used, where to find an example)
—>Eases working with AF3 for new developers
(from redmine: issue id 1415, created on 2013-06-17, closed on 2013-11-08)