Customize emails for monitoring alert

Log in to the Abiquo API Server as an administrator
In the config folder, if there is no mail folder, create a mail folder and set the owner as the tomcat user
```
/opt/abiquo/config/mail
```
In the mail folder, create the following files

Email file

monitoringAlertTemplate.mustache

<p>You are receiving this email because the alert <strong>{{name}}</strong> has been <strong>{{state}}</strong> at {{alertDate}}.</p>

<h4>Alert description</h4>
<p>{{description}}</p>

<h4>Notified alarms</h4>
<ul>
{{#alarms}}
<li><em>{{alarmName}}</em>: {{alarmDescription}} - <em>{{entityType}}<em>: {{entityName}}</li>
{{/alarms}}
</ul>

<p>For further details, go to the {{{portalname}}} at: {{{portaladdress}}}</p>

Properties file
monitoringAlert_en_US.properties
```
subject=Alert {0} has been {1} at {2}
portalname=Abiquo console
portaladdress={0}
```
If you change the subject property, you must restart the Tomcat server to apply your changes
The variable "{1}" represents the state of the alert as "activated" or "deactivated"
The variable "{2}" represents the timestamp of when the alert changed state
In the properties file you can only set the subject, portalname and portaladdress.

Optionally add custom variables and content
- In the email body, to add a custom variable, use double curly braces (also called double mustaches). For example
```
<p>Please call your system Administrator on <strong>{{helpline}}</strong></p>
```
- Then in your properties file, set value for your custom variable
```
helpline=555 12345
```
  To return unescaped HTML as part of a template property, use the triple mustache, which is "{{{" and "}}}". The Mustache templating software that adds the property values will escape HTML variables in double mustaches by default.

If your users have a language other than English, rename the file to change the language code to the user language
- For example, for "Spanish - Spain" change the en_US to es_ES
- The user language is the UI language when you create the user
Change the owner of the files to the tomcat user