[Kst] ScalarSelector and VectorSelector

[George Staikos]

  I added two new widgets today, as you might have noticed.  They encapsulate 
most of the manipulation required to get vectors and scalars as input in 
dialogs.  They have a button associated which allows the user to create new 
ones respectively, which is quite handy.  This can be disabled with a simple 
call on a case-by-case basis, so if you notice any places that you don't want 
this available, either send me a note, or just call 
allowNew(Scalars|Vectors)\(false\).

  ScalarSelector has not been implemented everywhere yet.  I'll finish that 
one up later tonight or tomorrow.  I will also add support for <none> to 
VectorSelector so that it can be used for Error Bars as well.  Things are 
becoming nicely compartmentalized now! :)

   With regards to refactoring, there is still more I would like to do.  
Operating the dialogs is really too complicated, and I would like to get rid 
of combobox indices altogether.  Strings or pointers are more "tangible" I 
think.  All the indices are rather confusing and easy to break.

-- 
George Staikos
KDE Developer				http://www.kde.org/
Staikos Computing Services Inc.		http://www.staikos.net/