Merge pull request #49 from miska/master

Little improvement of staging plugin
Merge pull request #50 from miska/master

Use project metadata to find parent
Merge pull request #51 from miska/master

Few improvements for staging plugin
Merge pull request #52 from miska/master

More improvements to staging plugin
Rename Package class to avoid collision
Merge pull request #53 from aplanas/master

Rename Package class to avoid collision
import urllib2
use status route
check extra packages
poll the right path
rework the repo logic to be able to prepare multiple repos
fix return value
we can't simply take other request's repos

they might come from different projects. It just worked in most cases
because most projects name is openSUSE_Factory
add shell bang
fix excluded builds
check for unused packages