Budget graph in project details (#3406)

* do not copy description if restarting via calendar
* added support to display negative durations
* fix charts for larger numbers

src/Repository/ActivityRepository.php

@@ -138,7 +138,7 @@ class ActivityRepository extends EntityRepository
             $stats->setCounter($timesheetResult['amount']);
             $stats->setRecordDuration($timesheetResult['duration']);
             $stats->setRecordRate($timesheetResult['rate']);
-            $stats->setRecordInternalRate($timesheetResult['internal_rate']);
+            $stats->setInternalRate($timesheetResult['internal_rate']);
         }
 
         $qb = $this->getEntityManager()->createQueryBuilder();