Added release blog for Arquillian GWT 1.0.0.Alpha1
Update to use github api instead of http.json request

* Move GitHub .github_auth file handling into a single class
* Add GitHub auth to repository metadata lookup
* Fix random user lookup when given nil
* Mask user:pass in URLs written to console
Arquillian Persistence Extension 1.0.0.Alpha6 release notes
Add getting_strted_with_forge and getting_started_rinse_and_repeat pl translation
Add shrinkwrap_introduction polish translation