Allow for other Jump to Location "bookmarks" #107

The "Jump to Location" in the upper right hand corner is very useful

Enhancement request

• When someone launches Fresco, allow them to pass in locations.json with preset locations
• May need a Preferences or Fresco Settings UI
• may need to change the Lat,Long data to GeoJSON

The demo below is a build of Fresco with the following changes in constants.js

{"key":"sk","label":"Sanikiluaq 0","lat":56.29,"lng":-78.69,"zoom":0},
{"key":"sk","label":"Sanikiluaq 2","lat":56.29,"lng":-78.69,"zoom":2},
{"key":"sk","label":"Sanikiluaq 4","lat":56.29,"lng":-78.69,"zoom":4},
{"key":"sk","label":"Sanikiluaq 6","lat":56.29,"lng":-78.69,"zoom":6},

Source