Update the README for stageportal pkg deps and dir structure changes
Updated the manifests code as per the upstream stageportal changes
Seperated download manifest function for more finer control
beautifulsoup dep should be part of stageportal
Added cli subscription test cases related to manifests upload and delete
Updated the README for some typos
Merge pull request #786 from kbidarkar/update-stageportal

updated stageportal as per the recent upstream changes.