Add deploy buttons and clean environment variables (#974)

* add render.yaml

* Clean environment variables



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Co-authored-by: Charles Bochet <charles@twenty.com>

server/src/core/client-config/client-config.entity.ts

@@ -30,7 +30,7 @@ export class ClientConfig {
   telemetry: Telemetry;
 
   @Field(() => Boolean)
-  demoMode: boolean;
+  signInPrefilled: boolean;
 
   @Field(() => Boolean)
   debugMode: boolean;