eNMS 3.22

• Remove database url from settings. Configured via env variable DATABASE_URL
• Remote scheduler
• Remove TACACS+ parameters from settings, use env variable instead: TACACS_ADDR, TACACS_PASSWORD
• Make REST API accept Tacacs and LDAP credentials (in the last version, if you were using TACACS+ or LDAP, you could authenticate
  in the UI but couldn't make calls to the REST API)
• Remove LDAP parameters from settings. The LDAP authentication is in the custom controller, there is a default
  function that works with a standard LDAP installation, but you can customize however you want.
  The LDAP server is now configured with the env variable LDAP_SERVER.
  The settings contain a new section "database" to enable ldap, database or tacacs authentication.
• Add replier option in send mail mechanism
• Rename "app_log" option to "change_log" in log function for services
• Add new entry in workflow RC menu "Workflow Results Table": contains all results for a given runtime,
  allowing for comparison of results same device / different service, same service / different device, etc.
• Refactor logging mechanism. In settings.json, add new logging sections to configure whether the log
  for a given logger should also be logged as changelog or service log by default.
• RBAC
• Fix authentication bug flask_login and add session timeout mechanism
• Make plugins separate from eNMS in their own folder, add bash script to install/update/uninstall them
• Make the CLI interface a plugins
• Remove summary from service state to improve workflow refresh performances
• Add Dark mode and theme mechanism
• Make search endpoint work with result to retrieve device results
• Allow dictionary and json as custom properties. For json properties, use jsoneditor to let the user
  edit them.
• Add placeholder as a global variable in a workflow (e.g to be used in the superworkflow)
• Add mechanism for creating custom configuration property
• Refactor data backup services with custom configuration properties. Implement "Operational Data" as
  an example custom property.
• Add new Git service. Replace "git_push_configurations" swiss army knife service with instance of git service.
• Add database fetch/commit retry mechanism to handle deadlocks & other SQL operational errors
• Add validation condition for validation section.