Add control.  Add initial modal functionality.

Control allows for social media sharing.  Modal functionality added with Foundation.  Add modal link on right arrow image.  Add method addModalContent with modal HTML and method to close modal.
Remove cursor pointer styling for popup
Add semicolon to modalId var
Add footer with about modal - modal doesn't have text
Modify text in modals for each school
Add phone to geojson
Remove extraspace in index.html
Merge pull request #8 from fma2/modals

Add modal functionalities for each school