Use mattermost v5 module (#1192)

vendor/github.com/mattermost/mattermost-server/v5/model/initial_load.go

@@ -0,0 +1,30 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type InitialLoad struct {
+	User        *User             `json:"user"`
+	TeamMembers []*TeamMember     `json:"team_members"`
+	Teams       []*Team           `json:"teams"`
+	Preferences Preferences       `json:"preferences"`
+	ClientCfg   map[string]string `json:"client_cfg"`
+	LicenseCfg  map[string]string `json:"license_cfg"`
+	NoAccounts  bool              `json:"no_accounts"`
+}
+
+func (me *InitialLoad) ToJson() string {
+	b, _ := json.Marshal(me)
+	return string(b)
+}
+
+func InitialLoadFromJson(data io.Reader) *InitialLoad {
+	var o *InitialLoad
+	json.NewDecoder(data).Decode(&o)
+	return o
+}