Add "List Employees" func

OPEN - task 88: Create HR module 
http://github.com/DevOpsDistilled/OpERP/issues/issue/88
Impl list()

OPEN - task 88: Create HR module 
http://github.com/DevOpsDistilled/OpERP/issues/issue/88
Add ListEmployeePane MVC compos

OPEN - task 88: Create HR module 
http://github.com/DevOpsDistilled/OpERP/issues/issue/88
Bean ListEmployeePane MVC compos

OPEN - task 88: Create HR module 
http://github.com/DevOpsDistilled/OpERP/issues/issue/88