Support for primitive types and sub-properties and some refactoring

[ofirw]

Hi,

I hope you will find these modifications and additions with value to your project.
Will be happy to discuss those.

These are the changes i've made:

• Support for primitive values - such as bool, so the Enabled property can be set as well.
• Support for Enums properties - such as FlatStyle.
• Support for sub-properties - such as FlatAppearance.BorderSize
• Some refactoring to seperate the creation of the proprerty and the logic to set the value.

Ofir