Merge pull request #75 from gAmUssA/master

updated images (no watermarked boy on screenshots)
final changes for ch14
Merge branch 'master' of https://github.com/Farata/EnterpriseWebBook
added acknowledgements
Updated book.asciidoc
modified acknowledgements
modified acknowledgements
Updated book.asciidoc
modified ch14
Merge branch 'master' of https://atlas-server.oreilly.com/git/1234000000310
updated stylesheets
additional docbook attributes for appendix and acknowledgments