Created attachment 1027569 [details]
diff for spacewalk.css

Description of problem:
Using Internet Explorer to access the WebUI I get an "Validation of CSRF security token failed" error page from tomcat everytime I want to submit a form with POST request.
The reason are wrong paths to some font files in spacewalk.css.
This problem was already discussed in the following thread on the mailing list: 
https://www.redhat.com/archives/spacewalk-list/2015-May/msg00053.html

Version-Release number of selected component (if applicable):
spacewalk-branding-2.3.25-1.el6.noarch

How reproducible:
Everytime.

Steps to Reproduce:
1. Use Internet Explorer for WebUI
2. Make changes in the User Detail Page, e.g. change the position
3. Click Update-button to save the changes

Actual results:
tomcat error page with "Validation of CSRF security token failed".

Expected results:
User details are updated.

Additional info:
httpd access-logs for IE session:
WINDOWS-IP - - [19/May/2015:17:41:10 +0200] "GET /rhn/groups/ListRemoveSystems.do?sgid=37 HTTP/1.1" 200 112035
WINDOWS-IP - - [19/May/2015:17:41:10 +0200] "GET /components/font-awesome/fonts/fontawesome-webfont.eot? HTTP/1.1" 200 7822
WINDOWS-IP - - [19/May/2015:17:41:11 +0200] "GET /components/font-awesome/fonts/fontawesome-webfont.woff?v=4.1.0 HTTP/1.1" 200 7821
WINDOWS-IP - - [19/May/2015:17:41:11 +0200] "GET /components/font-awesome/fonts/fontawesome-webfont.ttf?v=4.1.0 HTTP/1.1" 200 7818
WINDOWS-IP - - [19/May/2015:17:41:20 +0200] "POST /rhn/groups/ListRemoveSystems.do?sgid=37 HTTP/1.1" 403 1084

==> IE tries to load fonts in "/components/font-awesome/fonts/" but this is an invalid path, it should be "/fonts/font-awesome/fonts/". Instead the default „Page Not Found“ page is rendered, which generates a new csrf_token and therefore the following POST request gets an 403 because an old csrf_token is sent.

After changing the font paths in spacewalk.css IE is working as expected. 
The changes I made are in the attached diff file.