(#13486) Fix DJ doesn't work in a multi-server env

See:

http://projects.puppetlabs.com/issues/13486
http://projects.puppetlabs.com/issues/9409

This commit adds a patch written by Daniel Pittman and posted at
https://gist.github.com/d023814313208dcc1978 but never merged.

It is the case that users want to deploy multiple instances of Puppet
Dashboard and that this minor bug makes what would otherwise be a
decently straightforward multi-instance deployment non-functional. The
fix is simple. It's past due for this capability to be added out-of-box
to product.
Merge pull request #183 from reidmv/fix/13486/dj_dont_work_in_multiserver_env

(#13486) Fix DJ doesn't work in a multi-server env
Comment out specific gem rack version in our vendored Rails

http://projects.puppetlabs.com/issues/11669
Comment out specific gem rack version in our vendored Rails

http://projects.puppetlabs.com/issues/11669
Update VERSION for 1.2.23-rc3

Signed-off-by: Moses Mendoza <moses@puppetlabs.com>
Merge branch '1.2rc'

* 1.2rc:
  Update VERSION for 1.2.23-rc3
  Comment out specific gem rack version in our vendored Rails
(packaging) Update VERSION to 1.2.23
Merge branch '1.2rc'

* 1.2rc:
  (packaging) Update VERSION to 1.2.23