Fixing Test case #3745

Review ID - 2013002
Removed duplicate dsiplay_name field #3745

Review ID - 2013002
Merge pull request #9 from param107/feature/task-3745

Fixing Test case & Removing duplicate display_name field #3745
Remove unused __tryton__.py
Release version 3.0.1.1
Merge branch 'release/3.0.1.1'