ENYO-3114:Project duplication problem which is already deleted

Modified ProjectView.js

Change
- when project list was not selected from the entries. Error Pop-up happen. 

Note
- Edit -> Delete -> remove project pop up -> also delete files from disk unselect -> remove button click -> Edit -> Dulicate... click

Test Result
- "Please project list select item." Error Pop-up window appears.

Enyo-DCO-1.1-Signed-off-by: hgpark uionion@gmail.com