Shender/git118 refresh buddy text


Describe your PR
There was really 2 bugs here. The buddy text wasn't updated till the job had finished executing, thus sending a :finished SSE.
There was also a problem with the job.reload() not reading the updated values written by the thread which executed the job. This is a Rails bug that doesn't bypass the QueryCache for reloads.

/cc @zendesk/samson @pswadi-zendesk

### References
 - Jira link: #118 

### Risks
 - None
```
if @deploy
 params = { title: deploy_page_title, html: render_to_body(partial: 'deploys/header', formats: :html) }
 params[:notification] = deploy_notification if event == :finished
 JSON.dump(params)
else
 ...
end
```