Added multistate search for Education.com API

Changed SchoolList internal representation to a set (was list)

Changed SchoolList.populate signature (now only takes a state)

Changed SchoolList.populate to take a set of states

Map.java now checks the corners of the view port and runs Education queries on the set of states viewable.
Renamed SchoolList.java to SchoolSet.java
SchoolSets now populate based on all states currently in view

Map now populates SchoolList with all schools in states located at all corners and the center of the map
Fixed Geocoding getState

getState now parses Geocoding JSON more reliably

SchoolSet.populate() now checks for empty strings in the set of given input
Added education API key for wind to Common.java
Merge branch 'Tweak_Geocoding_calls' into dev
map.html now has the same input fields as index.html
Merge branch 'landon'

Conflicts:
	src/main/java/denfinder/model/Map.java
	src/main/resources/views/map.html
added in Chas' changes to map