Port bootstrap improvements from lecture capture preferences webapp

Created by: rjw57

This PR uses a combination of git format-patch and git am to port the changes from uisautomation/lecture-capture-preferences-webapp#4 back into the bootstap application. As such the commit dates, authorship and description are as in the original PR with fixups as necessary to allow use in the template.

A deviation from the mechanical conversion of the changes is to make ucamlookup an optional feature. For extra-CUDN deployments, additional work is needed to use ucamlookup and we may not actually need to in all cases.

Closes #35 (closed)