Hangouts Chat: More updates to Apps Script template
Hangouts Chat: More updates to Apps Script template

Change-Id: Idf6c3815b785ec4659d51b45fe9fd2d3f3eb805e

googleworkspace/hangouts-chat-samples,gsuitedevs/hangouts-chat-samples,gsuitedevs/hangouts-chat-samples,googleworkspace/hangouts-chat-samples,gsuitedevs/hangouts-chat-samples,googleworkspace/hangouts-chat-samples,googleworkspace/hangouts-chat-samples,gsuitedevs/hangouts-chat-samples