Move app/server to flipper-server-core

Summary: moved `app/src/server` to `flipper-server-core/src` and fixed any fallout from that (aka integration points I missed on the preparing diffs).

Reviewed By: passy

Differential Revision: D31541378

fbshipit-source-id: 8a7e0169ebefa515781f6e5e0f7b926415d4b7e9

desktop/app/src/init.tsx

@@ -51,12 +51,13 @@ import {getVersionString} from './utils/versionString';
 import {PersistGate} from 'redux-persist/integration/react';
 // eslint-disable-next-line flipper/no-electron-remote-imports
 import {ipcRenderer, remote} from 'electron';
-import {helloWorld} from 'flipper-server-core';
-import {setLoggerInstance, setUserSessionManagerInstance} from 'flipper-common';
+import {
+  setLoggerInstance,
+  setUserSessionManagerInstance,
+  GK as flipperCommonGK,
+} from 'flipper-common';
 import {internGraphPOSTAPIRequest} from './fb-stubs/user';
 
-helloWorld();
-
 if (process.env.NODE_ENV === 'development' && os.platform() === 'darwin') {
   // By default Node.JS has its internal certificate storage and doesn't use
   // the system store. Because of this, it's impossible to access ondemand / devserver
@@ -186,6 +187,8 @@ function setProcessState(store: Store) {
 }
 
 function init() {
+  // TODO: centralise all those initialisations in a single configuration call
+  flipperCommonGK.get = (name) => GK.get(name);
   const store = getStore();
   const logger = initLogger(store);
   setLoggerInstance(logger);