[Fix #1747] Add a new editorconfig lint task

lib/tasks/lint.rake

@@ -3,5 +3,6 @@ task :lint do
   sh "bundle exec haml-lint app/views/"
   sh "bundle exec scss-lint app/assets/stylesheets/"
   sh "bundle exec brakeman --no-pager"
+  sh "yarn lint:ec"
   sh "yarn lint:js"
 end

package.json

@@ -23,6 +23,7 @@
     "webpack-dev-server": "^3.1.4"
   },
   "scripts": {
+    "lint:ec": "eclint check $({ git ls-files ; find vendor -type f ; echo 'db/schema.rb' ; } | sort | uniq -u)",
     "lint:js": "eslint ./app/javascript ./config/webpack"
   },
   "engines": {