更改接口，提取方法到父类中
test
Merge branch 'master' of github.com:threeq/exUML

Conflicts:
	exUML/dock/projectDockItem/ExuBrowserBaseItem.cpp
	exUML/dock/projectDockItem/ExuBrowserBaseItem.h
	exUML/dock/projectDockItem/ExuPackageItem.cpp
	exUML/dock/projectDockItem/ExuPackageItem.h
	exUML/dock/projectDockItem/ExuProjectItem.cpp
	exUML/dock/projectDockItem/ExuProjectItem.h
	exUML/dock/projectDockItem/ExuUseCaseViewItem.cpp
	exUML/exUML.pro