Added ListView changes as FezStoreCS version 1.3 from course website
Added price  column
Lesson3: Beggining - bug of unregistered event
Lesson 4: added exporter to csv
Bug: Added Event handlet cannot be null.
Add wpf project, separete business layer to separate project
Creating FezSelection Window in WPF
Separation of business objects to new project
ReceiptView updating on changed list
Lesson 5: Initial Import Basic Binding
Window layout changed to proper resize
Xml BasketList Serialization
Xml BasketList Deserialize
Lesson 6 - RegExp Initial Import
Lesson 6 - Incomplete RegExp for validating field