Refactor: remove unnecessary double quotes, remove whenever possible chef.json, use whenever possible application recipe
Refactor: remove unnecessary double quotes, reference new attributes names
Fix: use '-O' option with wget command, test links presence before creating link, remove template 'variables' in order to use node attributes directly in the template
New: add default, data and appservers atttributes
New: create app datasource in jetty.xml template using node attributes