Custom Code for Pilot IDents (#1398)

* Custom Code for Pilot IDents

Adds a new setting to customize the ident or to use a fixed icao code in a multi airline environment.

If settings is null/empty, airline icao will be used as like before.

* StyleFix

app/Database/seeds/settings.yml

@@ -333,6 +333,13 @@
   options: ''
   type: int
   description: 'The length of a pilot''s ID'
+- key: pilots.id_code
+  name: 'Pilot ID Code'
+  group: pilots
+  value: ''
+  options: ''
+  type: text
+  description: 'Fixed ICAO code for pilot IDs'
 - key: pilots.auto_accept
   name: 'Auto Accept New Pilot'
   group: pilots