Focus on EntryTreeView when the return is pressed on a location line
Introduce UrlListMimeData class

By this, it is possible to distinguish cut action from copy action.
Remove redundant debug messages
Initialize 'copied'

kfilewizard.cpp:216:13: warning: 'copied' may be used uninitialized in
this function [-Wmaybe-uninitialized]
Select all when locationLine get a focus by mouse click
Restore locationLine text when dirTree or entryTree get a focus