NPE begone!

Module configuration is now done through constants with the same name as each of the attributes in the Configuration non-persistable entity. Note that this entity has since been removed. The effects of each constant is equal to that of the original NPE attribute. This allows maintaining the same functionality over reinstalls or upgrades of this module. (Ticket 82048)

Fix NullPointerException when there is no admin account in the database when logging a system action. In these scenarios, we log the action as performed by “[unknown]“. (Ticket 77281)