This commit was manufactured by cvs2svn to create tag'v1_1_Build_1010'.
Add a third button to allow exiting without saving
Update comments
Change some translations
Validate the list after adding the items, to force a re-layout
Show an error when a file could not be saved
Also show the unsaved data dialog while opening a project or creating a new one
Return boolean value for saveData()
Add method to set window title
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