Rename JBoss AS to WildFly

- renames name in pom.xml
- renames build result folder / zip
- renames output of started server
- renames in README
Tweak properties a bit so not every pom has full distro path but common variable
JBoss -> WildFly
Using statoil proxy
Initial mailserver subsystem
Initial mailserver subsystem
Model inspired by messaging subsystem
Merge branch 'mailserver_feature' of https://github.com/kr8670/wildfly into mailserver_feature