added a directive to control simple dollar expr enablement.

$expr is parsed as a server side expression, which may clash with some client-side JS framework. Now one can japid.simple.expr.enabled=false in the application.conf to turn it off.

~expr form is not affected.

minor fix for 0.9.6

re-release. reverse absolute lookup was broken for web socket

version 0.9.6

JDK8. AutoPath fix.