We need the ability to mark/define a TopComponent as undockable.  In different
cases or categories of applications such as something used in early childhood
development agencies or day cares where children are tested or analyzed it makes
sense not to allow users to move certain things around.  It is simply an issue
of poor computer skills and usability.  Sometimes it is important to not let the
user have more than a certain amount of flexibility.  One can always define a
TopComponent to always open up in the same place, however, this isn't good
sometimes because some users will accidentally drag a running instances
components around on the screen then call a tech support line because they have
no clue what just happened.  The system needs to support the developer not
allowing specific TopComponents to be undocked at all.

I set this up as a P1 as the release of the undocking features will be with
Netbeans 6.0.  We can better support the developer with simple abilities such as
this.