The Slider And Toolkit Update

* Added the slider widget that can display a horizontal or vertical
slider to set values between a given range
* Merged the Toolkit and Partsbin code. Partsbin is removed
* Widgets now use the block definition object
* Updated the label widget so it uses the font definition object from
the toolkit
* DataReceiver and DataProcessor bugfixes that were overwritten have
been checked in again
* PushButton property caption renamed to text