Clear Edit-Area in PreferencePages after an item has been removed

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Open the iDocIt!-Preference Page "Addressees".
2. Select item "Architect".
3. Click on button "Remove selected Item(s)"

What is the expected output? What do you see instead?
The item "Architect" is removed from the list of defined items, but its name 
and description is not cleared in the "Edit"-area. 

After removing an item, the active item should be set to null in the selection. 
When the active item is null, the textfields "name" and "description" should be 
empty and not editable.

Original issue reported on code.google.com by krauseda...@web.de on 15 Apr 2011 at 5:26

[GoogleCodeExporter]

Estimation: 2 hours

Original comment by dirk.mei...@gmail.com on 27 Apr 2011 at 8:45

[GoogleCodeExporter]

Original comment by dirk.mei...@gmail.com on 12 May 2011 at 7:16

• Changed state: Started

[GoogleCodeExporter]

After removing an item the next one in the list is selected and shown in the 
edit composite.

Original comment by dirk.mei...@gmail.com on 26 May 2011 at 6:18

• Changed state: Fixed