website/docs: link to real vagrant cloud url

This is mostly for cookies and google. If you're logged in to
www, you won't be logged in to apex, and visa versa. Also a Vagrant
Cloud bug but wanted to make it consistent on this end.
Merge pull request #3189 from mitchellh/docs-www-vagrant-cloud

website/docs: link to real vagrant cloud url
kernel/v2: validate forwarded ports [GH-3187]
core: Downloads with user/pass use curl -u flag [GH-3183]
core: vagrant help no longer loads Vagrantfile
guests/linux: rsync only chown if invalid user/group [GH-3186]
guests/linux: check for proper owner [GH-3186]
guests/linux: one more time
v1.5.1
website/www: update for deploy
Up version for dev
Set the Bundler UI only if we enable it [GH-3193]
Update CHANGELOG
Fixed broken PowerShell scripts execution [GH-3192]
Convert specs to RSpec 2.14.8 syntax with Transpec

This conversion is done by Transpec 1.10.2 with the following command:
    transpec test/unit/

* 507 conversions
    from: obj.should
      to: expect(obj).to

* 394 conversions
    from: == expected
      to: eq(expected)

* 260 conversions
    from: obj.should_receive(:message)
      to: expect(obj).to receive(:message)

* 85 conversions
    from: obj.stub(:message)
      to: allow(obj).to receive(:message)

* 25 conversions
    from: its(:attr) { }
      to: describe '#attr' do subject { super().attr }; it { } end

* 19 conversions
    from: obj.should_not
      to: expect(obj).not_to

* 7 conversions
    from: obj.should_not_receive(:message)
      to: expect(obj).not_to receive(:message)

* 3 conversions
    from: Klass.any_instance.should_receive(:message)
      to: expect_any_instance_of(Klass).to receive(:message)
For some weird reason the changes introduced by transpec made this spec fail, this should fix it
Merge pull request #3215 from fgrehm/transpec-unit

Transpec unit
Merge pull request #3210 from jyggen/patch-1

core: Fixed broken PowerShell execution
synced_folders/smb: hash ID so it is short enough [GH-3219]
commands/status: target for machine readable [GH-3218]