Add the EnvUser with tests. Create an Environment user during bootstrap

Added the EnvUser doc

Support for setting the last login time for the EnvUser

Added a factory for adding the envuser

Admin EnvUser gets added at bootstrap time

Removed a couple of attributes from the upgrade package that no longer needed to be there

This is a test passing no arguments. Would also like to see one with one passed parameter instance (see if all parameters are correctly used) and one with multiple arguments (see if it fails).