Add GUI for creating Zones, Campaigns, AdItems etc..

[kijepark]

[kijepark]

• Publisher/create
• Publisher/delete
• Zone/create
• Zone/delete
• Advertiser/create
• Advertiser/delete
• Campaign/create
• Campaign/delete
• CampaignAssignment/create
• CampaignAssignment/delete
• Placement/create
• Placement/delete

[kijepark]

If you need to add feature model deleting then have to delete all related models also. in this tutorial omit delete feature
ex: try to delete Publisher > get Zones assigned to Publisher > get Campaigns assigned to Zone delete 'em all...