title: Upload Excel File and save it as CSV to a specified path
body: <p>I'm new to Mendix and need to solve the following:</p>
  <p>Users all over the world drop a file (xlsx or xls) onto a web page or select a file through a file dialog.
  This file should be stored - converted to CSV - with a self-specified name onto a specified share on an own server.</p>
  <p>We've puzzled for hours - but to no avail...</p>
  <p>We tried various ExcelImporter-templates, the Export_to_CSV-button and several ready-cooked templates in the hope to understand the principles. Besides various obstacles the final problem was to get the file on our own machine.</p>
  <p>Is there anybody who can point to the needed widgets and who can explain (sort of a cooking recipie :-) ) how to proceed?</p>
  <p>TIA</p>