Update mapbox-gl-js

package.json

@@ -15,15 +15,15 @@
     },
     "dependencies": {
         "bootstrap": "^3.3.7",
-        "bootstrap-slider": "^10.0.0",
         "bootstrap-select": "^1.13.2",
+        "bootstrap-slider": "^10.0.0",
         "d3": "^3.5.17",
         "d3-timeline": "jiahuang/d3-timeline",
         "dnt-helper": "schalkneethling/dnt-helper",
         "eonasdan-bootstrap-datetimepicker": "^4.17.47",
         "jquery": "^3.2.1",
         "jquery.json-viewer": "^1.1.0",
-        "mapbox-gl": "^0.44.1",
+        "mapbox-gl": "^0.51.0",
         "moment": "^2.18.1",
         "satellite.js": "^2.0.0",
         "urijs": "^1.18.12",