fix (trajstorage.py): fix bugs   - line 583-586 handle error when self.featureNumber.keys() is empty sequence   - line 359-361 fix bugs (wrong result)
fix (trajstorage.py): fix bugs
  - line 583-586 handle error when self.featureNumber.keys() is empty
sequence
  - line 359-361 fix bugs (wrong result)

gwparikh/cvguipy,gwparikh/cvgui,gwparikh/cvguipy