/**
  * Get all available applications
  * @return null
  */
 public static function get_all_applications()
 {
     $applications = null;
     try {
         $applications = Airavata::getAllApplicationInterfaceNames(Session::get('authz-token'), Session::get("gateway_id"));
     } catch (InvalidRequestException $ire) {
         CommonUtilities::print_error_message('<p>There was a problem getting all applications.
         Please try again later or submit a bug report using the link in the Help menu.</p>' . '<p>InvalidRequestException: ' . $ire->getMessage() . '</p>');
     } catch (AiravataClientException $ace) {
         CommonUtilities::print_error_message('<p>There was a problem getting all applications.
         Please try again later or submit a bug report using the link in the Help menu.</p>' . '<p>Airavata Client Exception: ' . $ace->getMessage() . '</p>');
     } catch (AiravataSystemException $ase) {
         CommonUtilities::print_warning_message('<p>You must create an application module, interface and deployment space before you can create an experiment.
             Click <a href="' . URL::to('/') . '/app/module">here</a> to create an application.</p>');
         /*
                     CommonUtilities::print_error_message('<p>There was a problem getting all applications.
         Please try again later or submit a bug report using the link in the Help menu.</p>' .
         '<p>Airavata System Exception: ' . $ase->getMessage() . '</p>');
         */
     }
     if (count($applications) == 0) {
         CommonUtilities::print_warning_message('<p>You must create an application module, interface and deployment space before you can create an experiment.
             Click <a href="' . URL::to('/') . '/app/module">here</a> to create an application.</p>');
     }
     return $applications;
 }