Change: submission dates are now managed as long on the users' side

src/users/broker.hpp

@@ -20,8 +20,8 @@ public:
     /**
      * @brief Returns the date of the next submission by the cloud broker.
      * @details Two numbers are used as flags:
-     *    DATE_NEVER = -1.0 if the broker has finished to submit.
-     *    DATE_UNKNOWN = -2.0 if the broker doesn't have a next submission date
+     *    DATE_NEVER = -1 if the broker has finished to submit.
+     *    DATE_UNKNOWN = -2 if the broker doesn't have a next submission date
      * yet (user waiting for feedback)
      */
     double next_submission(double date) const;