[Bug 1771559] Re: error while loading icon with pyscss 1.3.5 or later

[OpenStack Infra]

Reviewed:  https://review.opendev.org/c/openstack/horizon/+/781803
Committed: https://opendev.org/openstack/horizon/commit/ec5261cce58b7ee84f1fa6afa54a52738b81bfae
Submitter: "Zuul (22348)"
Branch:    stable/ussuri

commit ec5261cce58b7ee84f1fa6afa54a52738b81bfae
Author: Ivan Kolodyazhny <e0ne at e0ne.info>
Date:   Fri May 22 13:02:46 2020 +0300

    Fix Material theme to work with any combination of pyScss and MDI icons
    
    ':before' class doesn't work as expected with current versions of
    xstatic-mdi and PyScss. It's a temporary workaround with copy ':before'
    styles from MDI directly into the Material theme.
    
    Closes-Bug: #1771559
    Co-Authored-By: Akihiro Motoki <amotoki at gmail.com>
    Change-Id: I969ad70065c580ba90bb0a050c7a9cf242d805ec
    (cherry picked from commit f3bfa383417b270fce384fee18c5cb470cec15f7)


** Tags added: in-stable-ussuri

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https://bugs.launchpad.net/bugs/1771559

Title:
  error while loading icon with pyscss 1.3.5 or later

Status in OpenStack Dashboard (Horizon):
  Fix Released
Status in python-pyscss package in Ubuntu:
  Confirmed

Bug description:
  Hello,

  Impossible to fetch font awesome icons with material design theme (provided in the package)
  No error in the web development console, but browser show symbol number like "xf44f" instead of showing icons.

  STEPS TO REPRODUCE:
  Use Chrome web browser
  Login to horizon
  Change theme to "Material"
  Try to use Horizon as usual

  Regards.

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