Refactor webpage with cluster status (provisioning log) so that it loads stdout, stderr dynamically, without user manual refresh. Code that renders this webpage is in endpoint/endpoint.py:cluster_status()

I think it makes sense to create and html template for it in endpoint/templates folder.
I’ve quickly searched and found possible solution here.

add some css, etc

Use conditionals in site.yml, variables will be defined using form with checkboxes.

SSH key has to be installed in SL in advance. When SSH key is installed in SL it require user to provide a name for a key, which should be entered in 'SoftLayer SSH key' field in cluster create form.
Ansible needs an SSH key to be able to provision and deploy software from controller server. Currently Ansible is using irina's key for provisioning, but user has different key. Vagrant can deploy multiple keys on master host, but host accessibility via user's key need to be tested.

User's login can be SL username, for password we can use his SL API key (we will store and compare md5 hash).

Alternatively, we can keep user's login/passwords as separate entity and have user logging in before creating clusters.

User can enter SL username and search for all clusters provisioned by this tool, their parameters and have an option to destroy a cluster.