Fix weekly goal calc if in last week of the year

If the week in case is the last week of the year,
this method would fail because weeksTillEndOfJourneyPeriod
is 0, causing a division by 0 exception

Fixes #432

Author: anarute

model/facade/action/GetPersonalSummaryByLoginDateAction.php

@@ -195,15 +195,15 @@ protected function doExecute() {
         }
         $totalResults = $dao->getPersonalSummary($user->getId(), $this->date);
 
+        $totalResults['weekly_goal'] = 0;
         if( $this->currentJourney ) {
             $extraGoalHoursSet = 0;
             $weeksTillEndOfJourneyPeriod = $this->getWeeksTillEndOfJourneyPeriod();
-            $extraGoalHoursSet += $this->currentUserGoal->getExtraHours() / $weeksTillEndOfJourneyPeriod;
-
-            $originalHoursToBeWorked = ($this->getWorkableHoursInThisPeriod() - $this->getWorkedHoursInThisPeriod())/ $weeksTillEndOfJourneyPeriod;
-            $totalResults['weekly_goal'] = round( ( $originalHoursToBeWorked + $extraGoalHoursSet ) * 60);
-        } else {
-            $totalResults['weekly_goal'] = 0;
+            if ($weeksTillEndOfJourneyPeriod > 0) {
+                $extraGoalHoursSet += $this->currentUserGoal->getExtraHours() / $weeksTillEndOfJourneyPeriod;
+                $originalHoursToBeWorked = ($this->getWorkableHoursInThisPeriod() - $this->getWorkedHoursInThisPeriod())/ $weeksTillEndOfJourneyPeriod;
+                $totalResults['weekly_goal'] = round( ( $originalHoursToBeWorked + $extraGoalHoursSet ) * 60);
+            }
         }
         return $totalResults;