Update incoming webhooks to hide DMs and accept direct JSON payloads.

config/config.json

@@ -5,7 +5,7 @@
         "SegmentDeveloperKey": "",
         "GoogleDeveloperKey": "",
         "EnableOAuthServiceProvider": false,
-        "EnableIncomingWebhooks": false,
+        "EnableIncomingWebhooks": true,
         "EnableTesting": false
     },
     "TeamSettings": {
@@ -86,4 +86,4 @@
         "TokenEndpoint": "",
         "UserApiEndpoint": ""
     }
-}
+}