whiteboard pin btn and remove some commentted code
Merge branch 'master' of github.com:TeamCocoDojo/cocodojo

* 'master' of github.com:TeamCocoDojo/cocodojo:
  fix first login unable to show github issue
  fix namespace conflict issue(library Github is the same as the meteor built-in library)
  Finish Session Button
  Use the host name for current website
  Get env
  Git ignore
  fix
  fix
  Minor changes