Update qa-ldap-process.php

Specific changes to allow authentication agains Active Directory
Update ldap-config.php

Added extra items needed to use Active Directory
Added configurable LDAP types

Created two diffferent classes to represent different types properties
and behaviors of LDAP servers. They inherit from a default LDAPServer
class which handles the connect for now.
Merge pull request #2 from Joustie/master

Change to make it work with AD