Removed deprecated models and migrations
General styling across the entire application. Notable things are change of body font and newly added icons to some models.
Added icons to LocationCategory and Relationship and updated models,
controllers and view accordingly. Presence-validators and parameter-
permissions added to controllers, view updated to display the icons.
Icons are currently stored and loaded at Amazon S3, which may arguably
be less than optimal, but it will do for now.
Final testing results after adding new attributes and updating factories and specs.