Merge pull request #857 from KevWright/master

Fixed some example snippets
Merge pull request #859 from KevWright/master

Fixed some example snippets
Add: FAQ entry for locking local user accounts

Derived from question on mailing list.
Merge pull request #860 from nickanderson/faq-locked-user

Add: FAQ entry for locking local user accounts
Added unpublished file comparison tuturial