Fix address formatting and move to super class

Both the map view and tree detail view controllers need to format an
address string by gluing together components from the plot dictionary. I
factored this function out into a new view controller super class.
Style the filter status view

Pulls in the secondary color from the environment and has borders to
match the other bars the map view.
Style the tree detail header

Matching Mike T's mockup.
Merge pull request #70 from jwalgran/topic/style-cleanup

Style cleanup