some old changes no idea
resolving managers names to their DN with name instead of displayName

added note in README.txt with reminder to update ldap db (run dumpad.pl)

besides using name instead of displayName, also going to store it all in lowercase so that the inconsistent capitalization of surnames between AD and CSV can be compared.

added upn and name fields in the query

improved error message when searching by email fails initially
added displayName vs preferred name output

updated some code comments to reflect the prev commit change (use name instead of displayName)