update "/rest" to "/rest/" to check for infourl

this update to prevent error in getting the infourl if the request host name include "/rest", like "http://reston.example.com"
Merge pull request #18 from esoekianto/master

update "/rest" to "/rest/" to check for infourl
Merge branch 'master' of https://github.com/Esri/resource-proxy

Conflicts:
	Java/proxy.jsp