+++ This bug was initially created as a clone of Bug #881864 +++

Description of problem:
in some scenarios tomcat doesn't notice a change when the forms start requesting a csrf token

Version-Release number of selected component (if applicable):
Spacewalk upgrades

How reproducible:
Most of the time.

Steps to Reproduce:
1.install an older Spacewalk
2.upgrade to newest Spacewalk

  
Actual results:
Some of the webui pages after upgrade may not be refreshed, since
tomcat stored a cached version to /var/cache/tomcat*/work/*.

Expected results:
the cache is clean and won't cause this kind of problem

Additional info:
N/A