[FR] Add quotas in application configuration

[rriclet]

Request Type

Feature Request

Add quotas for :

• users per orga
• alerts per orga
• custom fields per orga
• case templates per orga
• organisations

Optional configuration in application.conf looks like this :

quota {
  customField.count: 10
  organisation {
    count: 5
    alert.count: 30
    caseTemplate.count: 5
    user.count: 5
  }
}