Product updates

v1.2.0 (270522) -- Minor Update

• final version of Taco function (The official launch will be as soon as possible);
• Scheduled Messages directly from Spreadsheet -- we're doing this in our way, without any other 3rd party apps or APIs like Zapier; (can be refreshed from Admin Menu without restarting the app)
• added a pre-release of a function that populate an array with all of Users Data (will be used in the future for the Attendance System) + 3 other functions

• /help (Help Menu) is completely dynamically generated from Spreadsheet (can be refreshed from Admin Menu without restarting the app)
• Taco texts (but not only) can now be personalised and changed directly from Spreadsheet (can be refreshed from Admin Menu without restarting the app)
• Admin Menu -> Refresh Category have now a single dynamic action listener (saving around 120 lines of code)

• some minor bugs (Taco function & auxiliary functions)