map.js: remove useless squareroot and loop break
map.js: store projection object
map.js: move sector rendering code to separate file
waypoints.js: add sanity check
map.js: remove unused code
map.js: rename points to triangle
map.js: refactor fai triangle sector rendering
sectorrenderer.js: add missing epsg4326 projection object
map.js: move local variables to the inner scope