Support services with HTTPS endpoints (fix #812)
Update tsuru-admin doc to reference admin user configuration. Related to #818
Merge pull request #821 from scorphus/master

Support services with HTTPS endpoints (fix #812)
provision/docker: using tsuru errors package
app: run serializeEnvVars as a sync operation in env-set. Fixes #820
misc/git-hooks/archive: remove prefix from the generated archive
misc/git-hooks: document pre-receive hooks
provision/docker: acquire app lock when moving containers
api: prepare output from provisioner for env-set
service/bind: prepare output for provisioner on env operations
api: extract context handling to api/context package
api/context: some tests for api context package
api: context variable to prevent auto app unlock
provisioner: added method to return app units.

related to #806.
docker: implemented provisioner.Units.

related to #806.
docker: provisioner.Units returns an empty list when app does not
exist.

related to #806.
docker: returning the unit status in provisioner.Units.

related to #806.
docker: getting ip data for provision.Units.

related to #806.
collector: removed code that updates the unit data from provisioner.

related to #806.
provisioner: removing juju.