[enh] improved admin listing for objects

bt/admin.py

@@ -2,19 +2,22 @@ from django.contrib import admin
 from bt import models
 
 class ViolationAdmin(admin.ModelAdmin):
-    pass
+   list_display = ('country', 'operator', 'contract', 'resource_name', 'media', 'activationid')
+   list_filter = ('operator', 'contract', 'resource_name', 'media', 'country')
 admin.site.register(models.Violation, ViolationAdmin)
 
 class CommentAdmin(admin.ModelAdmin):
-    pass
+   list_display = ('violation', 'submitter_name', 'comment')
+   list_filter = ('violation', 'submitter_name')
 admin.site.register(models.Comment, CommentAdmin)
 
 class AttachmentAdmin(admin.ModelAdmin):
-    pass
+   list_display = ('name', 'comment')
 admin.site.register(models.Attachment, AttachmentAdmin)
 
 class ConfirmationAdmin(admin.ModelAdmin):
-    pass
+   list_display = ('violation', 'key')
+   list_filter = ('violation__operator', 'violation__contract', 'violation__resource_name', 'violation__media', 'violation__country')
 admin.site.register(models.Confirmation, ConfirmationAdmin)
 
 class FeaturedCaseAdmin(admin.ModelAdmin):