refacctor: add deprecated warning for env

Author: prafull-opensignlabs

.env.local_dev

@@ -8,13 +8,11 @@ PUBLIC_URL=https://localhost:3001
 GENERATE_SOURCEMAP=false
 # Set it to the URL from where APIs will be accessible, for local development it should be localhost:3000/api/app (use your local port number instead)
 # REACT_APP_SERVERURL=http://localhost:8080/app
-# A 12 character long random app identifier. The value of this should be same as APP_ID which is a variable used by backend API.
+# (DEPRECATED) This should not be changed if provided; it should be 'opensign'.
 REACT_APP_APPID=opensign
 
 
 # Backend ExpressJS config ****************************************************************************************************************************************************************************************
-# A 12 character long random app identifier. The value of this should be same as REACT_APP_APPID which is a variable used by Frontend React App.
-APP_ID=opensign
 # Name of the app. It will be visible in the verification emails sent out.
 appName=open_sign_server
 # A 12 character long random secret key that allows access to all the data. It is used in Parse dashboard config to view all the data in the database.
@@ -111,3 +109,6 @@ CRUxFgQUDYlgGVxSxuOknhQc256x3++7BDwwMTAhMAkGBSsOAwIaBQAEFFjASdYl
 
 # Provide Pass pharse of above PFX or p12 document
 PASS_PHRASE=opensign 
+
+# (DEPRECATED) This should not be changed if provided; it should be 'opensign'.
+APP_ID=opensign