Update mattermost vendor (3.7 => 4.1)

vendor/github.com/mattermost/platform/model/status.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2016 Mattermost, Inc. All Rights Reserved.
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
 // See License.txt for license information.
 
 package model
@@ -22,7 +22,7 @@ type Status struct {
 	Status         string `json:"status"`
 	Manual         bool   `json:"manual"`
 	LastActivityAt int64  `json:"last_activity_at"`
-	ActiveChannel  string `json:"active_channel" db:"-"`
+	ActiveChannel  string `json:"-" db:"-"`
 }
 
 func (o *Status) ToJson() string {
@@ -45,6 +45,26 @@ func StatusFromJson(data io.Reader) *Status {
 	}
 }
 
+func StatusListToJson(u []*Status) string {
+	b, err := json.Marshal(u)
+	if err != nil {
+		return ""
+	} else {
+		return string(b)
+	}
+}
+
+func StatusListFromJson(data io.Reader) []*Status {
+	decoder := json.NewDecoder(data)
+	var statuses []*Status
+	err := decoder.Decode(&statuses)
+	if err == nil {
+		return statuses
+	} else {
+		return nil
+	}
+}
+
 func StatusMapToInterfaceMap(statusMap map[string]*Status) map[string]interface{} {
 	interfaceMap := map[string]interface{}{}
 	for _, s := range statusMap {