Market over embassy (#404)

* marketplace proxy'd through embassy

* http not rpc

* fix up marketplace

ui/config-sample.json

@@ -1,8 +1,4 @@
 {
-  "start9Marketplace": {
-    "clearnet": "",
-    "tor": ""
-  },
   "patchDb": {
     "poll": {
       "cooldown": 10000
@@ -14,7 +10,6 @@
   },
   "mocks": {
     "enabled": true,
-    "marketplace": true,
     "connection": "ws",
     "rpcPort": "5959",
     "wsPort": "5960",