Added channels tags
Merge branch 'master' of github.com:opps/opps

* 'master' of github.com:opps/opps:
  Update make test, used coverage run
  bug fix bug container slugify, ref #211
  write models test
  remve opps contrib admin migrate, not used
  Fix image not is blank true in Imaged class
  generate migration containers add news fields in ContainerBoxContainers
  Add field ContainerBoxContainers in admin
  Add new fields in ContainerBoxContainers
Added get_channel template tag