[Katello] Docker Issues with "undifined method/method_missing" and no Page for "Docker_Tags"

Hi all,

I´m new to docker, so I have some questions, maybe those are limitiation on
Katello but I´m not sure…

My Setup:
Katello = 2.1.1
Foreman_Docker = 1.1.0

Workflow on Docker Server:
1.) I configured my Server to listen to Port 4243 => ok
2.) I logged in from ssh to Docker Hub for Registration => ok
3.) I pulled some images from Docker Hub => ok
4.) I can run all the images => ok

Workflow on Katello Server:
1.) I created a Product called "Docker Images" => ok
2.) I created a Repo "centos" and "cirros" and synced it => ok
3.) I created a Content View "Docker" and promoted it => ok
4.) I assigned my own Docker Server the Content View "Docker" => ok

I can see all my Containers on Katello and I´m also to able to start/stop
those (Container => All Containers)
I can create a new Registry on Katello (Container => Registries => New
I can pull the Docker Images from local Katello Server to my Docker Server

P1.) Error by creating a new Container via Katello GUI (Container => New
Container => Next => Error)
undefined method katello_partial' for #<#<Class:0x0000000e1fdbd8>:0x0000000a1e7490> app/helpers/layout_helper.rb:268:inform_for'
app/models/concerns/foreman/thread_session.rb:33:in clear_thread' lib/middleware/catch_json_parse_errors.rb:9:incall'

P2.) Error by clicking on "Manage Docker Images" (Content => Products =>
NoMethodError: undefined method tags' for #<Katello::DockerImage:0x0000000a1823b0> /opt/rh/ruby193/root/usr/share/gems/gems/activemodel-3.2.8/lib/active_model/attribute_methods.rb:407:inmethod_missing'
Completed 500 Internal Server Error in 92ms (Views: 0.6ms | ActiveRecord:

P3.) I have no Page "Docker Tags" on Katello as described via