Add mock of the messages page

sync/messages.go

@@ -0,0 +1,14 @@
+package sync
+
+import (
+	"context"
+
+	"github.com/Gleipnir-Technology/nidus-sync/db/models"
+)
+
+type contentMessageList struct{}
+
+func getMessageList(ctx context.Context, user *models.User) (string, interface{}, *errorWithStatus) {
+	content := contentMessageList{}
+	return "sync/message-list.html", content, nil
+}