Use querystring and url node modules instead of our own solution (utils.url_encode, utils.url_decode and UrlParams)
Remove url encoding utils we no longer need (utils.url_encode, utils.url_decode and UrlParams)
Merge branch 'develop' into feature/issue-146-use-querystring-node-utils

Conflicts:
	lib/http/dummy.js
Merge branch 'feature/issue-146-use-querystring-node-utils' into develop