add a HTTP301 (permanent) redirection to response api
add some log and a slf4j logger
add secured cookie creation method
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/main/java/spark/Response.java
adding securedCookie method
redirect http 3XX method
some logs
last version for slf4j (to be able to use varargs)
Merge remote-tracking branch 'lunatix/master'
http 3XX and secured cookies