Clean out display label page fields

Change-Id: I6bb1359228491f723a9048cfa2729686f68aac3f
Remove UploadCampaign related Special pages

Change-Id: I4ff62b8b70076297299a65d3727908ae555e15ee
Fix missing database commit when saving changes

Change-Id: I19465003ea1b2c338188e64c2debc2c2aedff142
Remove entries from uw_campaigns when pages get deleted

Change-Id: Ic559fea8649de7d99ba171add889efd9f1c59b59