CR-4182 Fix for OPENIG-239: Update documentation to reflect where expressions can now be used

git-svn-id: https://svn.forgerock.org/openig/trunk@459 dbb9e58e-28e6-4ce0-90e8-f11d9605b710
CR-4181 Fix for OPENIG-242: Incorrect filenames in Guide to OpenIG

git-svn-id: https://svn.forgerock.org/openig/trunk@460 dbb9e58e-28e6-4ce0-90e8-f11d9605b710