Add /lib/ui/workflow.js to geoweb.min.js

Needed to support running from source tree.
Convert tabs to spaces
Guard against undefined activeWorkflow
Merge remote-tracking branch 'origin/84-add-guard-for-activeworkflow' Fixes #84

* origin/84-add-guard-for-activeworkflow:
  Guard against undefined activeWorkflow
  Convert tabs to spaces
  Add /lib/ui/workflow.js to geoweb.min.js