title: PhpStorm: Converting folders encoding to another
body: <p>I have project, where are lots of files in <strong>ISO-8859-15</strong> and I need to convert them to <strong>UTF-8</strong>. If I change one file, it asks "Do you want to convert - plaplapla", if I say yes, important symbols wont become ???. </p>
  
  <p>However, since my project file amount is HUGE, I cannot do that one by one. Changing encoding settings from project settings, it might change encoding to utf-8 but all the symbols will become ??? (thus no conversion).</p>
  
  <p>So, how can I tell PhpStorm to convert all files into utf-8? Is it possible and if yes, how? What is the alternative method?</p>