* chore(lib): update to groovy V 2.3.6
* fix(Exception): remove useless cast to Exception (avoit incorrect cast exception)
[#1872] fix(session): restore session, flash before new request even for serveStatic call

Conflicts:
	samples-and-tests/just-test-cases/conf/dependencies.yml
Methods should be protected so that they can be used/overidden from outside default package
* Add specific method to allow to override the compiler options