Arvados

Clicking on "Add a new container request" button in /container_requests page is giving the following error. It is hence not possible to create new container_requests using UI.

{
  ":errors":[
    "Command can't be blank",
    "Container image can't be blank",
    "Output path can't be blank" 
  ],
  ":error_token":"1465925601+f874c24c" 
}

Hide the button.

Suggest hiding the button via "creatable?" method, like in source:apps/workbench/app/models/pipeline_instance.rb