Merge pull request #44 from twcook/master

Changed default validation from 'auto' to 'no'.
Merge pull request #45 from twcook/master

Minor improvements to using oXygen.
Added referral to validation functions, added links to spec
Merge pull request #46 from dizzzz/late_fixes

Added referral to validation functions, added links to spec
Add link to eXist book, fix links to support services and training.
remove old text of old LDAP works
Merge pull request #48 from dizzzz/misc_improvements

remove old text of old LDAP works
Merge pull request #1 from eXist-db/master

Updates from master