Examples made more up to date

* replaced references to JBoss AS/EAP with WildFly 8
* removed references to Tomcat 6
* arquillian.xml cleaned up, removed old containers
* removed randomly occurring vim modelines
* jsf/numberguess
  * renamed webapp-jboss5* configs to webapp-wildfly
  * removed jsf12 config; the 1.2 slot is no longer present in WF
  * removed servlet config; context.xml no longer applicable
* s/Web Beans/Weld/
* examples/se: Markdownified READMEs, removed licences from READMEs (like in other examples)