ATLAS-318 Config file conatining API endpoint + all api calls to be centralized (sanjayp via sumasai)

ATLAS-406 Resizing lineage window – should be an anchor on a corner – like ppt for graphic (sanjayp via shwethags)

ATLAS-376 UI: Use the Schema API of the backend to populate details for Schema tab (darshankumar89 via sumasai)

API changes

Apache License Headers added

-Removed nginx
-Added watch task for html,css and js

-Removed unnecessary code from nginx.conf file
-Removed express from DGI/gruntfile
-Removed head.html and foot.html
-Removed duplication of including bootstrap.css
-Added script tag after last div in index.html