Config set from server

Summary: Instead of having duplicate configs defined on our HTML. Move the config definition to the server.

Reviewed By: aigoncharov

Differential Revision: D51307092

fbshipit-source-id: 68f4afc918cf191b3a15b3981429c5a05d5df8df

desktop/static/index.web.html

@@ -14,16 +14,7 @@
 
   <title>Flipper</title>
   <script>
-    window.flipperConfig = {
-      theme: 'light',
-      entryPoint: 'bundle.js',
-      debug: false,
-      graphSecret: 'GRAPH_SECRET_REPLACE_ME',
-      appVersion: 'FLIPPER_APP_VERSION_REPLACE_ME',
-      sessionId: 'FLIPPER_SESSION_ID_REPLACE_ME',
-      unixname: 'FLIPPER_UNIXNAME_REPLACE_ME',
-      authToken: 'FLIPPER_AUTH_TOKEN_REPLACE_ME',
-    }
+    window.flipperConfig = FLIPPER_CONFIG_PLACEHOLDER;
   </script>
   <style>
     .message {