[Bug 109279] New: Used data objects cannot be deleted from context menu but can be deleted through Delete button

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http://bugs.kde.org/show_bug.cgi?id=109279         
           Summary: Used data objects cannot be deleted from context menu
                    but can be deleted through Delete button
           Product: kst
           Version: unspecified
          Platform: unspecified
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kst kde org
        ReportedBy: rchern interchange ubc ca


Version:            (using KDE KDE 3.3.0)
Installed from:    00

How to reproduce:
- create a vector
- create a curve from the vector
- right click on the vector

The vector has "Delete" disabled. 

- highlight the vector and click "Delete" at the bottom of the data manager

The vector and curve are deleted properly

Expected Behaviour:

The "Delete" menu item should be enabled whenever the "Delete" button is 
enabled.