SMS-notifications and Voice call enabling

To enable SMS-notifications and Voice Calls, it is necessary to do the following:

In the client configuration file /etc/saymon/saymon-client.yaml to set the parameters enableSmsTrigger and enableVoiceCallTrigger to true:
```
return {
 ...
 enableVoiceCallTrigger: true,
 enableSmsTrigger: true,
 ...
 }
```

In the section Server of the server configuration file /etc/saymon/saymon-server.conf to add paths to the scripts which send SMS-notifications and implement voice calls:

"server" : {
    ...
    "sms_script": "path to script to send sms-notifications",
    "voice_call_script": "path to script for voice calls",
    ...
    }

Script for sending SMS-notifications obtains the following arguments:

$1 - Addressee’s phone number (as it was entered in the trigger);

$2 - ID of the object in which the trigger was activated;

$3 - Name of the object in which the trigger was activated;

$4 - ID of the state of the object;

$5 - Text of the notification which was set up in Notification templates.

Script for implementing voice calls obtains the following arguments:

$1 - Addressee’s phone number (as it was entered in the trigger);

$2 - ID of the object in which the trigger was activated;

$3 - Name of the object in which the trigger was activated;

$4 - ID of the state of the object.

To restart the service saymon-server in order to apply changes:
```
$sudo service saymon-server restart
```