Added ungleich app to extend Page models.

Ungleich app has a model called UngleichPage,
this model has an attribute called image_header
which will be used to set the background image for
the page header.

Signed-off-by: rscnt <rascnt@gmail.com>

ungleich/admin.py

@@ -0,0 +1,12 @@
+from django.contrib import admin
+from cms.extensions import PageExtensionAdmin
+
+# Register your models here.
+
+from .models import UngleichPage
+
+
+class UngleichPageAdmin(PageExtensionAdmin):
+    pass
+
+admin.site.register(UngleichPage, UngleichPageAdmin)