User specific files should not appear in .gitignore

More information: https://insight.symfony.com/what-we-analyse/git.user_specific_ignored_file

in .gitignore, line 1 
  1. .idea/
    .idea/ is user-specific and should not appear in a project .gitignore. Consider adding it to the user global .gitignore instead.
    Time to fix: about 15 minutes
    
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                                    Last edited  by Nicolas Widart
                    
  2. .php_cs.cache
  3. vendor/
  4. composer.lock
  5. Modules/