UI tweaks to question history

- still seeing some people add responses to the history comments
- Changing the term "comments" to "notes" to help distinguish the
functionality
Updating note nomenclature and removing hardcoded ID
no reason to use mailer_cache for images
Make Reassignment More Efficient and Remove Unnecessary Code
change path to url for methods called from email templates
Array Population Tweaking
Merge branch 'reassign_efficiency' into development
Allow email to degrade gracefully if images are blocked
Merge branch 'development' of github.com:extension/aae into development
another no-image gmail attempt
webkit hack
more tweaks for blocked images
Merge branch 'development' into take_some_time_off