Develop a Workflow Manager Page and Workflow Summary component for Dashboard

Created by: charlesbrandt

In addition to showing active workflows and current resource utilization, the dashboard should show the status of workers, regardless of if they are active or not. This is useful when troubleshooting issues to know, e.g. when the last time a worker was seen by the API and which workers are configured for the system. This feature would only show workers configured for a specific instance of bioloop, not all workers across all instances (as may be the case in #39?)

In CMG, this functionality looks like this: