Add color to absence reasons

aleksis/apps/alsijil/frontend/components/coursebook/absences/participationStatus.graphql

@@ -12,6 +12,7 @@ mutation updateParticipationStatuses(
         id
         name
         shortName
+        colour
       }
     }
   }
@@ -31,6 +32,7 @@ mutation touchDocumentation($documentationId: ID!) {
           id
           name
           shortName
+          colour
         }
         isOptimistic
       }

aleksis/apps/alsijil/frontend/components/coursebook/coursebook.graphql

@@ -76,6 +76,7 @@ query documentationsForCoursebook(
         id
         name
         shortName
+        colour
       }
       isOptimistic
     }