feat: add per weekday stats to report (resolve #493)

models/report.go

@@ -3,8 +3,9 @@ package models
 import "time"
 
 type Report struct {
-	From    time.Time
-	To      time.Time
-	User    *User
-	Summary *Summary
+	From           time.Time
+	To             time.Time
+	User           *User
+	Summary        *Summary
+	DailySummaries []*Summary
 }