Add gps track line, add documentation

assets/layers/gps_location/gps_location.json

@@ -3,7 +3,8 @@
   "description": "Meta layer showing the current location of the user. Add this to your theme and override the icon to change the appearance of the current location. The object will always have `id=gps` and will have _all_ the properties included in the [`Coordinates`-object](https://developer.mozilla.org/en-US/docs/Web/API/GeolocationCoordinates) returned by the browser.",
   "minzoom": 0,
   "source": {
-    "osmTags": "user:location=yes"
+    "osmTags": "id=gps",
+    "maxCacheAge": 0
   },
   "mapRendering": [
     {

assets/layers/gps_track/gps_track.json

@@ -0,0 +1,21 @@
+{
+  "id": "gps_track",
+  "description": "Meta layer showing the previou locations of the user. Add this to your theme and override the icon to change the appearance of the current location.",
+  "minzoom": 0,
+  "source": {
+    "osmTags": "user:location=yes",
+    "maxCacheAge": 0
+  },
+  "name": "Your track",
+  "mapRendering": [
+    {
+      "icon": "circle:#f00",
+      "iconSize": "2,2,center",
+      "location": "point"
+    },
+    {
+      "width": 3,
+      "color": "#bb000077"
+    }
+  ]
+}

assets/layers/home_location/home_location.json

@@ -3,7 +3,8 @@
   "description": "Meta layer showing the home location of the user. The home location can be set in the [profile settings](https://www.openstreetmap.org/profile/edit) of OpenStreetMap.",
   "minzoom": 0,
   "source": {
-    "osmTags": "user:home=yes"
+    "osmTags": "user:home=yes",
+    "maxCacheAge": 0
   },
   "mapRendering": [
     {

assets/layers/toilet/toilet.json

@@ -471,12 +471,6 @@
       }
     }
   ],
-  "iconBadges": [
-    {
-      "if": "opening_hours~*",
-      "then": "isOpen"
-    }
-  ],
   "filter": [
     {
       "id": "is_open",
@@ -574,6 +568,12 @@
           }
         ]
       },
+      "iconBadges": [
+        {
+          "if": "opening_hours~*",
+          "then": "isOpen"
+        }
+      ],
       "location": [
         "point"
       ]