(core) Adding import from google drive to the home screen

Summary: Importing from google drive from home screen (also for anonymous users)

Test Plan: Browser tests

Reviewers: dsagal, paulfitz

Reviewed By: dsagal

Differential Revision: https://phab.getgrist.com/D2943

app/server/lib/DocManager.ts

@@ -327,7 +327,6 @@ export class DocManager extends EventEmitter {
       clientId: docSession.client.clientId,
       doc: metaTables,
       log: recentActions,
-      plugins: activeDoc.docPluginManager.getPlugins(),
       recoveryMode: activeDoc.recoveryMode,
       userOverride: await activeDoc.getUserOverride(docSession),
     };