Ensure that root .acl file is generated in pre-5.0.0 servers

Closes #977

Author: rubensworks

lib/server-config.js

@@ -55,6 +55,13 @@ async function ensureWelcomePage (argv) {
       serverVersion: packageData.version
     })
   }
+
+  // Ensure that the root .acl file exists,
+  // because this was not mandatory in before 5.0.0
+  const existingRootAcl = path.join(serverRootDir, '.acl')
+  if (!fs.existsSync(existingRootAcl)) {
+    await fsUtils.copyTemplateDir(path.join(templates.server, '.acl'), existingRootAcl)
+  }
 }
 
 /**
@@ -118,6 +125,13 @@ function initTemplateDirs (configPath) {
     path.join(configPath, 'templates', 'server')
   )
 
+  // Ensure that the root .acl file exists,
+  // because this was not mandatory in before 5.0.0
+  ensureDirCopyExists(
+    path.join(__dirname, '../default-templates/server/.acl'),
+    path.join(configPath, 'templates', 'server', '.acl')
+  )
+
   return {
     account: accountTemplatePath,
     email: emailTemplatesPath,