get password history size from properties
add test and RecentlyUsedPasswordException
improve persistence, more tests
test conflict return at rest tier
Truncate all limits to 1k max.

Added trucation and query tests
Merge pull request #143 from apigee/query-count-truncation

Truncate all limits to 1k max.
add passwordChanged property to indicate time of last password change for admin users
Merge pull request #144 from apigee/USERGRID-1566

Usergrid 1566
disable test because of the jstl classloader issue
include organization's properties in /management/token and /management/users/ID requests.
Merge pull request #145 from apigee/USERGRID-1419

include organization's properties in /management/token and /management/users/ID requests.