Listings URI configured on server

examples/listings/Makefile

@@ -1,4 +1,18 @@
-dev:
+print-listings:
 	@exec echo Blacklist URI: http://localhost:8888/listings/blacklist.json
 	@exec echo Whitelist URI: http://localhost:8888/listings/whitelist.json
-	@exec python main.py --dev-mode --watch
+
+dev: print-listings
+	@exec python main.py \
+	  --dev \
+	  --no-browser \
+	  --LabServerApp.blacklist_uri=http://localhost:8888/listings/blacklist.json \
+	  --LabServerApp.whitelist_uri=http://localhost:8888/listings/whitelist.json
+
+dev-watch: print-listings
+	@exec python main.py \
+	  --dev \
+	  --no-browser \
+	  --LabServerApp.blacklist_uri=http://localhost:8888/listings/blacklist.json \
+	  --LabServerApp.whitelist_uri=http://localhost:8888/listings/whitelist.json \
+	  --watch

packages/extensionmanager-extension/listing/listings.json

@@ -1,12 +1,6 @@
 {
-  "listings": [
-    {
-      "type": "white",
-      "uri": ""
-    },
-    {
-      "type": "black",
-      "uri": ""
-    }
-  ]
+  "listings": {
+    "blacklist_uri": "",
+    "whitelist_uri": ""
+  }
 }