Migrate to dep (#3972)

* Update makefile to use dep

* Migrate to dep

* Fix some deps

* Try to find a better version for golang.org/x/net

* Try to find a better version for golang.org/x/oauth2

vendor/github.com/go-macaron/session/README.md

@@ -1,20 +0,0 @@
-# session [![Build Status](https://travis-ci.org/go-macaron/session.svg?branch=master)](https://travis-ci.org/go-macaron/session) [![](http://gocover.io/_badge/github.com/go-macaron/session)](http://gocover.io/github.com/go-macaron/session)
-
-Middleware session provides session management for [Macaron](https://github.com/go-macaron/macaron). It can use many session providers, including memory, file, Redis, Memcache, PostgreSQL, MySQL, Couchbase, Ledis and Nodb.
-
-### Installation
-
-	go get github.com/go-macaron/session
-	
-## Getting Help
-
-- [API Reference](https://gowalker.org/github.com/go-macaron/session)
-- [Documentation](http://go-macaron.com/docs/middlewares/session)
-
-## Credits
-
-This package is a modified version of [beego/session](https://github.com/astaxie/beego/tree/master/session).
-
-## License
-
-This project is under the Apache License, Version 2.0. See the [LICENSE](LICENSE) file for the full license text.

vendor/github.com/go-macaron/session/redis/redis.goconvey

@@ -1 +0,0 @@
-ignore