There is no deleting image function after deployment

Expected behavior

[x] On the /repositories/ web page, can select repositories to perform deleting operation.
Actual behavior
[x] On the /repositories/ web page, only can view the repositories, there is no deleting operation can be done.

web-repository

Steps to reproduce the problem

[x] Deployed with docker, below are the configuration:

Environments for registry:

SEARCH_BACKEND=sqlalchemy
SQLALCHEMY_INDEX_DATABASE=sqlite:////tmp/docker-registry.db
REGISTRY_STORAGE_DELETE_ENABLED=true

Environments for registry-frontend:

ENV_DOCKER_REGISTRY_HOST=http://registry.srv
ENV_DOCKER_REGISTRY_PORT=5000
ENV_REGISTRY_PROXY_FQDN=registry.example.net
ENV_REGISTRY_PROXY_PORT=443

Nginx config:

  location /v2/ {
    # Do not allow connections from docker 1.5 and earlier
    # docker pre-1.6.0 did not properly set the user agent on ping, catch "Go *" user agents
    if ($http_user_agent ~ "^(docker\/1\.(3|4|5(?!\.[0-9]-dev))|Go ).*$" ) {
      return 404;
    }

    # To add basic authentication to v2 use auth_basic setting plus add_header
    auth_basic "registry.localhost";
    auth_basic_user_file /etc/nginx/conf.d/registry.password;
    add_header 'Docker-Distribution-Api-Version' 'registry/2.0' always;

    proxy_pass                          http://docker-registry;
    proxy_set_header  Host              $http_host;   # required for docker client's sake
    proxy_set_header  X-Real-IP         $remote_addr; # pass on real client's IP
    proxy_set_header  X-Forwarded-For   $proxy_add_x_forwarded_for;
    proxy_set_header  X-Forwarded-Proto $scheme;
    proxy_read_timeout                  900;
  }

  location / {
    # basic authentication
    auth_basic "registry-frontend.web";
    auth_basic_user_file /etc/nginx/conf.d/registry.password;

    proxy_pass                          http://registry-frontend;
    proxy_set_header  Host              $http_host;
    proxy_set_header  X-Real-IP         $remote_addr; # pass on real client's IP
#    proxy_set_header  X-Forwarded-For   $proxy_add_x_forwarded_for;
#    proxy_set_header  X-Forwarded-Proto $scheme;
    proxy_read_timeout              900;
  }

Specifications

[x] Which version of docker (docker version) are you running?

Client:
 Version:      1.11.2
 API version:  1.23
 Go version:   go1.5.4
 Git commit:   b9f10c9
 Built:        Wed Jun  1 21:47:50 2016
 OS/Arch:      linux/amd64

Server:
 Version:      1.11.2
 API version:  1.23
 Go version:   go1.5.4
 Git commit:   b9f10c9
 Built:        Wed Jun  1 21:47:50 2016
 OS/Arch:      linux/amd64

[x] Which operating system do you use? ubuntu-14.04
[x] Which version of the docker-registry-frontend are you running? v2 This is git revision: 3ad864b

kwk / docker-registry-frontend

There is no deleting image function after deployment #150

Expected behavior

Actual behavior

Steps to reproduce the problem

Specifications