Refactor package name for item module
Set relationships for item module with bare entities

OPEN - task 19: Inappropriate entity relationships 
http://github.com/DevOpsDistilled/OpERP/issues/issue/19
Add item module attributes
Refactor repo packages for item module
Refactor service packages for item module
Merge branch 'item-module' into develop
Merge branch 'develop'
Refactor service package for Category entity
Merge branch 'item-module' into develop
Configure RMI for ItemService
Merge branch 'rmi-config' into item-module
Remove obsolete classes with Autowire Dependency exception
Make server services bare (with defaults)
Create sample Pane to create new Item.

OPEN - task 20: Create a working item module workflow 
http://github.com/DevOpsDistilled/OpERP/issues/issue/20
Use generics to specify the Observer type

OPEN - task 21: Use Generics in AbstractModel 
http://github.com/DevOpsDistilled/OpERP/issues/issue/21
Merge branch 'iss21' into develop
Merge branch 'iss21' into item-module
Create simple implementations for item module

OPEN - task 20: Create a working item module workflow 
http://github.com/DevOpsDistilled/OpERP/issues/issue/20
Remover ServerApp from .gitignore
Remove ServerApp from .gitignore