provisioners/chef: fix syntax error
core: don't use active_machines too much, deletes data
fix failing test
core: handle EACCES when cleaning up .vagrant dir
changed Vagrantfile template to use "site.pp" for puppet instead of "init.pp".
core: fix interpolation error on v1=>v2 upgrade warinings [GH-2142]
Merge pull request #2138 from BreiteSeite/master

commands/init: changed Vagrantfile template to use "site.pp"
hosts/linux: fix undefined variable in NFS export [GH-2137]
website/docs: page titles and better upgrade instructions
website/docs: page titles on everything, cover more info
Remove 'v' prefix on version number in vagrant -v
Merge pull request #2147 from grepory/version_number_fix

core: remove 'v' prefix on version number in vagrant -v
guests/coreos: proper guest IP detection [GH-2146]
v1.3.1
Update version for dev