title: how can I replace the calendar of vtigercrm with another customized calendar (solar calendar)?
body: <p>I am modifying the Vtiger CRM environment and have changed its language from English to Persian. Now I want to replace the Vtiger's calendar (which its system is Gregorian) with another calender. You can see the images of these two calenders below:</p>
  
  <p>Gregorian calendar which already being used in Vtiger:
  <img src="https://i.stack.imgur.com/eGlun.jpg" alt="Gregorian calendar"></p>
  
  <p>My solar calendar which I want to use in Persian Vtiger:</p>
  
  <p><img src="https://i.stack.imgur.com/8PZfo.jpg" alt="Solar calendar"></p>
  
  <p>I believe that I should use my calendar component in <code>/var/www/html/vtigercrm/jscalendar</code> but I do not know how to replace the Gregorian calendar with new one. I highly appreciate if you help me.</p>