CR-4639 OPENAM-4483 Fix doc on getting SAML 2.0 persistent IDs from user entries

This fix includes some cleanup in the install guide
found when preparing an external config directory.

git-svn-id: https://svn.forgerock.org/openam/trunk@10686 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d
Additional fix for OPENAM-4412

git-svn-id: https://svn.forgerock.org/openam/trunk@10687 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d
OPENAM-4527 FR-389

git-svn-id: https://svn.forgerock.org/openam/trunk@10694 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d