* Update site for v1.4.0-beta.1
Signed-off-by: Nolan Brubaker <brubakern@vmware.com>

* Add v1.4.0-beta.1 changelogs
Signed-off-by: Nolan Brubaker <brubakern@vmware.com>

* Update upgrade link to v1.4
Signed-off-by: Nolan Brubaker <brubakern@vmware.com>

* Correct docs links in changelog
Signed-off-by: Nolan Brubaker <brubakern@vmware.com>