Add support for schedules (#137)

Reviewed-on: #137

backend/web.go

@@ -71,10 +71,18 @@ func renderCreateTask(c *gin.Context) {
 		return
 	}
 
-	_, err = db.CreateTask(&CreateTaskRequest{
+	request := &CreateTaskRequest{
 		Name:   name,
 		Reward: reward,
-	})
+	}
+
+	schedule := c.PostForm("schedule")
+	if schedule != "" {
+		request.Schedule = &schedule
+	}
+	
+	_, err = db.CreateTask(request)
+
 	if err != nil {
 		renderError(c, http.StatusInternalServerError, err)
 		return