Remove bsdtar by checking magic
Add unit tests for tar/untar with multiple compression + detection
Update docs
Merge branch 'master' into remove_bsdtar

Conflicts:
	docs/sources/contributing/devenvironment.rst
fix missing command in irc bouncer example
Move the attach prevention from server to client
Remove Run race condition
Fix bug on compression detection when chunck < 10bytes
* API: Add tag lookup to history command. Fixes #882
Update documentation
Fixed on documentation.

* replaced previously removed concepts/containers and concepts/introcution by a redirect
* moved orphan index/varable to workingwiththerepository
* added favicon to the layout.html
* added redirect_home which is a http refresh redirect. It works like a 301 for google
* fixed an issue in the layout that would make it break when on small screens
Vagrantfile: Add support for VMWare Fusion provider

As a user who has blown $150 on VMWare Fusion and vagrant-vmware, I
would like to use my new shiny to hack on Docker. Docker already has a
multi-provider Vagrantfile, so adding another one presents little risk.

Known Issues:

- The docker install of a new kernel breaks the Vagrant shared folder.
    - This seems to be because the VMWare hgfs module doesn't build
      against a 3.8 kernel.
    - I don't believe that shared folder support is actually in use
Merge pull request #921 from dhrp/docs-redirects-and-fixes

Fixes on documentation. LGTM
Merge branch 'master' into race_attach-fix
Remove useless goroutine
Remove bsdtar dependency in various install scripts
* API: Send all tags on History API call
Nicer output for 'docker build'
Merge pull request #926 from josephholsten/fix-znc-example

- Documentation: fix missing command in irc bouncer example
Fix incorrect docs for 'docker build'