ISIS-290: first steps towards a shiro impl
ISIS-290: more on the shiro security integration.
ISIS-290: shiro security + integration into example app
ISIS-290: updating quickstart_wrj example app

- also fix to updateGeneratedArchetypreSources.groovy to fix issue with incorrect editing of .launch files
- also fix to webapp's index.html to fix a link in the generated app's welcome page
ISIS-290: adding security/shiro into root pom.xml
ISIS-290: updating quickstart_wrj-archetype