CR-1454 Fix for OPENAM-386: Configure an error page for web policy agent

git-svn-id: https://svn.forgerock.org/openam/trunk/openam@4769 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d
Additional fix for OPENAM-386: Configure an error page for web policy agent

Give the entry an anchor in case someone wants to link to it.

git-svn-id: https://svn.forgerock.org/openam/trunk/openam@4770 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d