[UI] Node roles are locked after clicking Edit Roles button

[Andrey Sledzinskiy]

reproduced on {"build_id": "2014-05-07_01-00-26", "mirantis": "yes", "build_number": "184", "ostf_sha": "fe718434f88f2ab167779770828a195f06eb29f8", "nailgun_sha": "6b5e2797dae6a3b803b3ac7102ae3d9164a013cf", "production": "docker", "api": "1.0", "fuelmain_sha": "cb99264a1d5c5cd949f95a835f86ea1eb00c766f", "astute_sha": "9c83d3ecec69df03cd94620e2df92249ba4ec786", "release": "5.0", "fuellib_sha": "616a164132a6a195b756236923bc2f4345bc93f0"}

Steps:
1. Create env with default values
2. Add one node with some role
3. Select node and click Edit Roles

Expected - roles checkboxes are active
Actual - roles checkboxes are locked
This bug occures from time to time, you can click Edit roles and cancel many times until you catch this bug (screen is attached)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/92863

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/92863
Committed: https://git.openstack.org/cgit/stackforge/fuel-web/commit/?id=65d04d817741fed855d73dad78b0a251924e94c6
Submitter: Jenkins
Branch: master

commit 65d04d817741fed855d73dad78b0a251924e94c6
Author: Alexandra Morozova <email address hidden>
Date: Thu May 8 18:59:48 2014 +0300

    Editing roles when scheduled update causes all roles disablings

    Change-Id: Ic8e842c474838163b8c4556e2f935922953ba5f6
    Closes-bug: 1317119

[Andrey Sledzinskiy (asledzinskiy)]

verified on {"build_id": "2014-05-15_01-10-31", "mirantis": "yes", "build_number": "205", "ostf_sha": "69bdb9729cbf16d2c8ba927e946d64a8898909af", "nailgun_sha": "0c88805f28d658be82b305eaeafc5466b563569d", "production": "docker", "api": "1.0", "fuelmain_sha": "fc249cd1fe62d5303f531cf00d9e31ee2ab642d2", "astute_sha": "2b19f9cda281a4e53fb4a2e241d882e29ab9724b", "release": "5.0", "fuellib_sha": "1c7d598a65309f8bda1391360f0b94bfb5015180"}