Add a 'details' view for a completed approval node

[wenottingham]

ISSUE TYPE

• Feature Idea

SUMMARY

Including who approved (or denied) it and when, or whether it timed out.

[mabashian]

Idea is that the user would access this interface through the workflow results. Clicking on the approval node (or some link on the node) would either A) Open up a modal with these details in it or B) Navigate the user to a dedicated details view or C) Some other solution which would satisfy the feature

[unlikelyzero]

covered in workflow-approvals.spec.js