PLT-2241 Refactored statuses into a more real-time system (#3573)

* Refactored statuses into a more real-time system

* Updated package.json with correct commit and fixed minor bug

* Minor updates to statuses based on feedback

* When setting status online, update only LastActivityAt if status already exists

model/status_test.go

@@ -0,0 +1,27 @@
+// Copyright (c) 2016 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestStatus(t *testing.T) {
+	status := Status{NewId(), STATUS_ONLINE, 0}
+	json := status.ToJson()
+	status2 := StatusFromJson(strings.NewReader(json))
+
+	if status.UserId != status2.UserId {
+		t.Fatal("UserId should have matched")
+	}
+
+	if status.Status != status2.Status {
+		t.Fatal("Status should have matched")
+	}
+
+	if status.LastActivityAt != status2.LastActivityAt {
+		t.Fatal("LastActivityAt should have matched")
+	}
+}