Implement pseudo-unique GUIDs for author and custodian
Minor bugfixes and unique GUID per export document

Change-Id: I7153d951fffa69240014200ead11992ad779ae3e
Signed-off-by: Jeremy Ho <jujaga@gmail.com>
Disable login UI and session timeout set to 0

Change-Id: I050e5bcdbcdf33ae02efbee8c895418135e77556
Signed-off-by: Jeremy Ho <jujaga@gmail.com>