Factor expansion service logic as an auxiliary library

fix(manager): add test for listDeploymentsRequestHandler

doc(cli): improve help output

feat(glide.yaml): Add versions to dependencies

Additionally:
- corrected the appengine import name
- Added the license field

fix(cli): change deployment delete to remove

feat(repo): remove repo by name + refactors

This is for consistency. Other commands use 'remove,rm' as removal
verbs. Example: 'helm repo rm'

feat(cli): move 'helm dm' to 'helm server'

fix(*): fix license headers

doc(workflow): fix references to 'dm' commands

* + fix old repo tests for Name addition

doc(chart_format): fix title and intro

This is no longer a proposal, so the intro now reflects that.

Fix backwards link markdown in README

* + fix addRepo

* also added name as arg in helm repo add cmd

Third round of refactoring for Manager