Feature/not earned badge image

## Summary

Add disabled image for image badges not owned by current_user
you can create 2 mixins here:

    = transition($transition)
      -moz-transition: $transition
      -ms-transition: $transition
      -o-transition: $transition
      -webkit-transition: $transition
      transition: $transition

    = filter($pixels)
      -webkit-filter: blur($pixels)
      -moz-filter: blur($pixels)
      -o-filter: blur($pixels)
      -ms-filter: blur($pixels)
      filter: blur($pixels)

and use like this
    +transition(all 1s ease)
    +filter(5px)