Refactoring and ui fix for loading of all schools.
Refactoring and ui fix for loading of all schools.

Moved out methods for map-settings to own js file.  Create method loadAllSchools to be used by both map at load and view all schools toggle button.  Add startLoading aspect to view all schools toggle click - it was taking a long time so now the user can see how long it takes to load all the info. Add comments above methods to clarify what they do.

fma2/nyc-high-school-programs,fma2/nyc-high-school-programs