"This role can not be combined ..." error visible near each role checkbox if there are no available nodes

[Nikolay Fedotov]

ISO: {"release": "4.0", "nailgun_sha": "d79a914cc093b4e1bb8fb87d8d85d5657097f37f", "ostf_sha": "cf48dac2a6e7ad284fc93c529f3d1e4668504028", "astute_sha": "d14e9d2475c55b29a5d475f7c112d979c6251ff4", "fuellib_sha": "219cb747129ca19b53f42ede0e3257d18e915d9e"}

*preconditions*
there are not available / free nodes

*steps*
- create environment
- click "add nodes" button

*result*
"This role can not be combined ..." error is visible near all role checkboxes

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/61423

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/61423
Committed: https://git.openstack.org/cgit/stackforge/fuel-web/commit/?id=17562c24b313bac08f326b2288bdc46e9b9c3133
Submitter: Jenkins
Branch: master

commit 17562c24b313bac08f326b2288bdc46e9b9c3133
Author: jkirnosova <email address hidden>
Date: Wed Dec 11 16:34:44 2013 +0400

    Fixes role management screens

    Closes-Bug: #1259518

    Change-Id: I3439cdf24f6ed370df62e581baa1f488a28427d3