[SAC] Re-enable LDAP user creation

[Sandro Santilli]

On Mon, May 09, 2016 at 11:51:20AM -0400, Alex M wrote:

> ldapsearch -H ldaps://ldap.osgeo.org/ -b dc=osgeo,dc=org -x
> "(&(createTimestamp>=20160401100000Z))" +
> 
> The + sign at the end dumps the createTimestamp

I've figured other ways. Documented them in:

 https://wiki.osgeo.org/wiki/SAC:LDAP#Querying_the_LDAP_database

And I added a new section with details on the new cron job:

 https://wiki.osgeo.org/wiki/SAC:LDAP#Monitoring

--strk;