Elevation profile

Refactored app / directory structure for Blueprints app;

added rasterinfo app to serve [distance, value] array for linestring and epsg provided as GET parameter values; This request should work if you have setup a Pyramid with raster data for Utrecht on your local dev server:

http://127.0.0.1:5000/rasterinfo/profile?geom=LINESTRING(566582.6327506%206816233.9453951,%20570156.06382243%206816233.9453951)&epsg=900913