Removed inline implementations from Rect.h and moved them to Rect.cpp
Removed inline implementations from Button.h and moved them to Button.cpp
Removed inline implementations from Font.h and moved them to Font.cpp
Removed inline implementations from MainWindow.h and moved them to Mainwindow.cpp
Removed use of STL wstring template from from Button class.
Removed use of STL wstring template from from MainWindow class.
Removed bad constructor design from font class.
Added initial value for caption at main window class.