Optimize remote control code

[dsnallfot]

• [x] Just use one function to call Twilio API (in MVP the function is in all remote send view controllers)
• [ ] Implement alamofire server for increased security regarding Twilio credentials Wont fix for now since current implementation with credentials as user defaults settings are as safe as current LF NS/Dex credentials storage
• [x] moved to issue #47 Overhaul the code string syntax sent to trigger shortcuts in the receiving phone. Make it more readable in sms history

[dsnallfot]

One function instead of many fixed in #64