Merge branch 'remove_mapquest' into 'master'

Remove MapQuest provider as it is no longer free



See merge request !33

meshviewer/config.json

@@ -43,15 +43,6 @@
 
   ],
   "mapLayers": [
-    { "name": "MapQuest",
-      "url": "https://otile{s}-s.mqcdn.com/tiles/1.0.0/osm/{z}/{x}/{y}.jpg",
-      "config": {
-        "subdomains": "1234",
-        "type": "osm",
-        "attribution": "Tiles &copy; <a href=\"https://www.mapquest.com/\" target=\"_blank\">MapQuest</a>, Data CC-BY-SA OpenStreetMap",
-        "maxZoom": 18
-      }
-    },
     { "name": "arcgisonline",
       "url": "https://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer/tile/{z}/{y}/{x}",
       "config": {